Product Details:
| Grade | Glass |
| SiO2 Content | 99% |
| Mesh Size | 325 Mesh |
| Grade Standard | Technical Grade |
| Packaging Size | 50 kgs Bag |
| State/Form | Powder |
| Precipitation State | Micronised |
| Color | White |
| Usage/Application | Industrial |
| Physical State | Powder |
| Packaging Type | Brand New PP Bags |
| Country of Origin | Made in India |
Micronised Silica Powder – Grade 325 for FRP, composite, and resin systems, suitable for technical datasheets, product brochures, specifications, and customer communications.
Micronised Silica Powder – Grade 325Uses & Applications in FRP / Composite / Resin SystemsProduct OverviewMicronised Silica Powder Grade 325 is a finely ground, high-purity crystalline silica with a typical particle size ≤45 microns, offering excellent dispersion, uniform particle distribution, and consistent performance in Fiber Reinforced Plastics (FRP) and polymer composite formulations. Owing to its high hardness, chemical inertness, and controlled fineness, Grade-325 silica functions as an effective reinforcing filler, rheology modifier, surface improver, and cost-efficient extender.
It is compatible with unsaturated polyester, vinyl ester, epoxy, phenolic, and polyurethane resin systems.
Key Functional Roles in FRP & Composite Systems1. Reinforcing Filler for Mechanical StrengthImproves compressive strength, hardness, and abrasion resistance
Enhances load-bearing capacity of filled resin matrices
Reduces resin shrinkage and micro-cracking during curing
Applications:
FRP panels and laminates
Structural mouldings
Industrial enclosures and housings
Provides controlled viscosity increase without excessive thickening
Improves fiber wet-out and resin flow control
Minimizes resin run-off in vertical or inclined laminations
Suitable for:
Hand lay-up
Spray-up processes
Filament winding and pultrusion resin systems
Fine particle size enables smooth surface finish and improved mold replication
Reduces pinholes, waviness, and surface irregularities
Enhances aesthetic quality of exposed FRP parts
Common in:
Gel coats
Top coats
Decorative FRP panels
Reduces post-cure deformation and warpage
Improves dimensional accuracy of molded components
Stabilizes resin systems during thermal cycling
Allows higher filler loading while maintaining performance
Reduces overall resin consumption
Improves formulation consistency in large-volume FRP production
Chemically inert to acids, alkalis, and solvents
Enhances durability of FRP components exposed to chemicals, moisture, and outdoor environments
Improves long-term stability in corrosive service conditions
Product Details:
| Minimum Order Quantity | 25 Kg |
| CaCO3 Content | 99 % |
| Packaging Size | 50 KGS |
| Whiteness | 96 % |
| Mesh Size | 400 Mesh |
| State | Powdered |
| Packaging Type | HDPE Bag, 50 KGS |
| Color | White |
| Grade Standard | Poly / Resin Statue & Marble Statues Application and Artificial Marble |
| Usage | POLY RESIN STATUE |
| Brand | ASTRRA |
| Physical State | POWDER |
| Country of Origin | Made in India |
Marble Powder (Marblo XL D) (Super) is a high-purity, ultra-fine, micronized marble powder specifically designed for polyester resin statues, marble statues, and artificial marble applications. It offers excellent whiteness, smoothness, and compatibility with resin systems, making it a preferred filler material.
1. Poly/Resin Statue ManufacturingEnhances Strength & Durability: Improves mechanical properties of resin-based statues.
Improves Surface Finish: Provides a smooth, glossy texture and fine details in sculptures.
Reduces Shrinkage & Cracks: Ensures dimensional stability and prevents warping.
Better Resin Compatibility: Optimized for use with polyester and epoxy resins for seamless bonding.
Increases Hardness & Density: Replicates the look and feel of natural marble.
Enhanced Carvability & Detailing: Allows for intricate designs and smooth finishes.
UV & Weather Resistance: Helps statues withstand outdoor exposure.
Lightweight Composition: Reduces weight while maintaining strength, making transportation easier.
Gives a Natural Marble-Like Appearance: Mimics real marble texture and aesthetics.
Improves Workability: Enhances moldability for casting countertops, tiles, and slabs.
Enhances Shine & Gloss: Contributes to a polished and high-luster surface.
Increases Durability & Impact Resistance: Reduces brittleness and enhances product lifespan.
Heat & Stain Resistance: Ensures long-lasting quality in engineered stone applications.
✔ High Purity & Whiteness – Provides excellent brightness for premium-quality statues and artificial marble.
✔ Fine Particle Size – Ensures better dispersion, smooth texture, and improved casting properties.
✔ Reduced Porosity – Prevents air bubbles and enhances the finish of final products.
✔ Excellent Chemical Stability – Resists yellowing and degradation over time.
Polyester Resin & Epoxy-Based Statues
Artificial Marble Slabs, Tiles, and Countertops
Decorative Moldings & Sculptures
High-Quality Marble-Effect Furniture
Interior & Exterior Architectural Elements
Additional Information:
Product Details:
| Minimum Order Quantity | 50 Kg |
| SiO2 Content | 99% |
| Mesh Size | 100 Mesh |
| Grade | 36 |
| Packaging Size | 50 Kg/bag |
| Usage/Application | Industrial |
| State | Powdered |
| Purity (%) | 99.9 |
| Packaging Type | HDPE Bag |
| Brand | Astrra Chemicals |
| Country of Origin | Made in India |
| Formula | SiO2 |
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| SiO2 Content | 99.5% |
| Mesh Size | 325 Mesh |
| Grade | FRP |
| Purity | 99% |
| Usage/Application | Construction Industry |
| Physical State | Powder |
| Pack Type | HDPE Bag |
| Molar Mass | 60.08 g/mol |
| Brand | Astrra Chemicals |
| Formula | SiO2 |
| Packaging Size | 25 kg |
| Pack Size | 50 Kg |
We have emerged as a prominent manufacturer, supplier, wholesaler and exporter of high quality Silica Powder ( Pure Fine ) highly suitable for FRP FIBREGLASS FILLER APPLICATION. Based in Chennai - Tamil Nadu - India
Pure Silica Powder (also known as precipitated silica, amorphous silica, or ground quartz powder, depending on the grade) plays a crucial role in FRP (Fiber-Reinforced Plastic) and composite applications due to its chemical inertness, high hardness, thermal stability, and reinforcing properties.
✅ Uses & Applications of Pure Silica Powder in FRP / Composite Industries🔩 1. Filler in FRP CompositesUsed as an inert filler in polyester, vinyl ester, and epoxy resin systems.
Reduces resin content (cost-saving), while maintaining volume and dimensional stability.
Enhances mechanical strength, abrasion resistance, and hardness of the composite.
Helps control viscosity and improves surface finish of molded parts.
Provides rigidity and compressive strength without compromising fiber orientation.
Improves impact resistance and thermal expansion properties.
Maintains part tolerances over temperature cycles.
Especially in amorphous or fumed silica forms, it imparts thixotropic properties to resin systems.
Prevents sagging or settling in vertical or complex molds.
Ensures uniform dispersion of resins during lamination or molding.
Commonly used in FRP mold/tooling boards, boat hulls, panels, and automotive parts.
Enhances wear and thermal resistance in GRP (glass-reinforced plastic) tools.
Ultra-fine grades of silica improve surface smoothness in gel coats or topcoats.
Helps reduce shrinkage and pinholes in finished parts.
While pure silica is not itself a flame retardant, it can support flame-retardant systems by:
Acting as a heat sink.
Forming protective barriers with other additives (like alumina trihydrate or phosphorus compounds).
✅ Cost-effective filler
✅ Chemically inert (non-reactive with resins)
✅ Thermal and UV resistance
✅ High hardness (Mohs ~7)
✅ Improves mechanical and surface properties
| Property | Preferred Silica Type |
|---|---|
| Thixotropy | Fumed/hydrophilic silica |
| Cost-effective filler | Ground quartz/micronized silica |
| Surface finish | Ultra-fine precipitated silica |
| Flame synergy | Amorphous silica + FR agents |
Product Details:
| Minimum Order Quantity | 50 Kg |
| Grade | Industrial Grade |
| Purity | 99% |
| Form | Powder |
| Particle Size | 5–10 µm |
| Application | Flame Retardant |
| Packaging Size | 50 kg/bag |
| Physical State | Powder |
| Brand | Astrra Chemicals |
| Packaging Type | HDPE Bag |
| Chemical Formula | Al(OH)3 |
| Moisture Content | ≤0.3% |
| Country of Origin | India |
| Molar mass | 78 g/mol |
|
Chemical Propertie |
Typical Limits (%) – ATH - 325 |
|
Free Moisture at 110 deg.C` |
0. 03 – 0. 50 |
|
L.O.I. I is determined at 1050 deg.C |
34 . 50 – 35. 00 |
|
SiO2 |
0. 014 – 0. 020 |
|
Fe2O3 |
0. 013 – 0. 020 |
|
TiO2 |
0. 004 – 0. 007 |
|
Al2O3 |
64. 00 – 65. 00 |
|
Na2O (Total) |
0. 28 – 0. 35 |
|
AL (OH)3 |
98. 50 – 99. 80 |
Physical Propertie:
|
Physical Properties |
ATH – 325 percent |
|
On + 100 ( 149 Microns) |
- |
|
On + 200 ( 75 Microns) |
- |
|
On + 325 ( 45 Microns) |
5 Max. |
|
Through – 325 ( 45 Microns) |
95 |
|
Bulk Density ( gm/cc) |
0. 85 – 1. 04 |
|
Oil absorption (ml/100g) |
25 - 28 |
Product Details:
| Minimum Order Quantity | 50 Kg |
| MgO Content | 32 % |
| Packaging Size | 50 kgs |
| Whiteness | 94 % |
| Mesh Size | 300 Mesh |
| Packaging Type | 50 kgs |
| State | Powdered |
| Grade | A2 |
| Color | WHITE |
| Brand | ASTRRA |
| Country of Origin | Made in India |
Uses & Applications of French Chalk / Putty Powder (Grade - A2) for FRP / Composite / Resin & Various Applications
French Chalk, also known as Talcum Powder or Putty Powder, is a naturally occurring form of hydrated magnesium silicate. When processed to Grade A2 quality, it finds wide applications due to its fine particle size, high whiteness, smooth texture, and inert chemical properties.
Key Applications: 1. FRP (Fibre Reinforced Plastics):Filler and Extender: Enhances mechanical strength, thermal resistance, and dimensional stability of FRP components.
Surface Finish: Improves smoothness and reduces shrinkage during molding.
Weight Reduction: Acts as a lightweight filler to lower overall component density.
Matrix Reinforcement: Blended with polyester, epoxy, or vinyl ester resins for improved structural integrity.
Cost Efficiency: Reduces consumption of expensive resins without compromising properties.
Surface Properties: Enhances gloss, polish, and workability of finished composites.
Viscosity Control: Acts as a thixotropic agent in resins, improving workability and application.
Anti-Sagging Agent: Prevents sag in vertical resin applications.
Improved Dispersion: Provides uniform texture and minimizes cracking in cast and molded parts.
Works as a pigment extender and provides a matte finish.
Enhances scrub resistance and anti-settling properties.
Acts as a bulk filler in wall putties and automotive body fillers.
Increases smoothness and easy sanding properties.
Improves processability, tensile strength, and heat resistance.
Acts as a flux and improves surface glaze properties.
High Purity
Whiteness >90%
Fine Particle Size (typically <25 microns)
Oil Absorption & Softness
Inert to most chemicals
Additional Information:
Product Details:
| Grade | Construction |
| Grain Size | 0.2–0.5 mm |
| Usage/Application | Construction |
| SiO2 Content | 99.5% |
| SiO₂ Content | ≥ 99% |
| Mesh Size | 150 Mesh |
| Purity Grade | Construction Grade |
| Silica Content | 99% |
| Packaging detail | 50 Kg Bag |
| Application | Construction |
| Form | Powder |
| Packaging Size | 50 kg |
| Color | Grey |
Pure Silica Grits 60/120 refer to crystalline silica particles (typically quartz) that are graded to sizes between 60 mesh (approx. 250 microns) and 120 mesh (approx. 125 microns). This medium-fine grit size is widely used in various industrial processes due to its hardness, chemical purity, and thermal stability.
✅ Uses & Applications of Pure Silica Grits (60/120 mesh) �� 1. Surface Preparation & SandblastingIdeal for abrasive blasting to clean metal, stone, or concrete surfaces.
Removes rust, old paint, scale, and coatings efficiently.
Prepares surfaces for coating or painting (especially in marine or construction industries).
Added to epoxy flooring systems and grouts for anti-slip properties.
Used in terrazzo flooring and decorative concrete as an aggregate.
Fills gaps and voids in cementitious materials, enhancing durability.
Used as a raw material in glass melting due to its high SiO₂ content.
Helps improve thermal resistance and optical clarity in specialty glass.
Functions as a fluxing agent and filler in ceramic bodies and glazes.
Used in manufacturing refractory bricks and linings for furnaces due to its high melting point and thermal shock resistance.
Used in core and mold making for precision castings.
Maintains dimensional accuracy and withstands high temperatures in metal casting.
Sometimes used in frac sand blends (if meeting purity and strength specs).
Helps prop open fractures in shale to allow gas/oil flow.
Utilized in water and wastewater filtration systems.
Acts as a multi-layered filter bed component due to its consistent particle size and chemical inertness.
Used in grinding, polishing, and lapping of stone, metal, or glass surfaces.
Suitable for vibratory finishing or tumbling operations.
Acts as a functional filler to improve durability, abrasion resistance, and film hardness.
Improves anti-skid properties in floor and road coatings.
Medium-fine grit ideal for balanced abrasion and surface smoothness.
High purity (typically >99% SiO₂) ensures chemical inertness.
High Mohs hardness (~7) for long-lasting performance.
Thermal stability and non-reactivity in harsh environments.
Product Details:
| Minimum Order Quantity | 100 Kg |
| MgO Content | 32 % |
| Packaging Size | 50 kg |
| Whiteness | 92 % |
| Mesh Size | 300 Mesh |
| Application | Plastics, Detergent, FRP, Rubber, Ceramics, Paints, Paper |
| Oil Absorption | 40 g/100g |
| pH Value | 7.0 |
| Packaging Type | Brand New PP Bags |
| State | Powdered |
| Color | White |
| Moisture | < 1 % |
| Form | Micronized |
| Country of Origin | Made in India |
French Chalk / Putty Powder (Grade A2) is a finely ground, high-purity form of natural talc (hydrated magnesium silicate). Known for its smoothness, whiteness, softness, and chemical inertness, it is widely used across multiple industries for its functional and aesthetic properties.
Here’s a brief summary of the uses and applications of French Chalk / Putty Powder (Grade A2):
1. Paints and CoatingsPurpose: Extender and filler.
Applications:
Enhances smoothness, opacity, and suspension in paints.
Provides matte finish and anti-settling properties in decorative and industrial coatings.
Purpose: Filler and levelling agent.
Applications:
Used in wall putty formulations to provide a smooth finish and easy spreadability.
Improves crack resistance and surface whiteness in wall coatings.
Purpose: Reinforcing filler.
Applications:
Enhances mechanical strength, mold release, and processability in rubber and plastic compounds.
Acts as an anti-blocking and anti-caking agent in films and sheets.
Purpose: Flux and filler.
Applications:
Used in ceramic bodies for whiteness, smooth surface, and thermal shock resistance.
Reduces firing temperatures and improves workability.
Purpose: Coating pigment and filler.
Applications:
Increases opacity, brightness, and printability of paper and board products.
Purpose: Absorbent and texturizer.
Applications:
Used in face powders, body talcs, and soaps for smooth feel and oil/moisture absorption.
Purpose: Lubricant and anti-tack agent.
Applications:
Applied as a dry lubricant on yarns and threads to reduce friction.
Prevents sticking and tangling during textile processing.
Purpose: Excipient and anti-caking agent.
Applications:
Used as a glidant and carrier in tablet production and topical powders.
Purpose: Coating component.
Applications:
Acts as a moisture-resistant and thermal insulating filler in flux coatings for welding rods.
Purpose: Mild abrasive.
Applications:
Used in metal polishing, cleaning powders, and furniture polish formulations for a smooth buffing action.
Key Features of Grade A2 French Chalk / Putty Powder:
High purity and fine particle size.
Excellent whiteness and smooth texture.
Chemically inert, non-toxic, and non-reactive.
Additional Information:
Product Details:
| Grade | FRP |
| SiO2 Content | 99.5% |
| Mesh Size | 800 |
| Packaging Size | 50 kg |
| Purity | 99% |
| Usage/Application | Construction Industry |
| Color | White |
| Country of Origin | Made in India |
Here’s a detailed overview of the Uses & Applications of Micronised Silica (Grade – 800 M, Pure White) across various industries:
⚪ What is Micronised Silica – Grade 800 M (Pure White)?Micronised Silica, also known as precipitated or natural amorphous silica, is a very fine, high-purity white powder. Grade 800 M typically refers to an ultra-fine particle size with high brightness and surface area, optimized for functional and aesthetic performance.
Particle Size: Approx. 5–10 microns (D90) or finer
Whiteness: > 96%
Purity: > 99% SiO₂
Oil Absorption: High
pH: Neutral to slightly alkaline
Matting agent: Reduces gloss while maintaining smooth texture.
Rheology modifier: Improves thickening and anti-settling behavior.
Enhances abrasion resistance, film strength, and water repellency.
Acts as an extender pigment, replacing costly TiO₂ in white paints.
Used in tile adhesives, grouts, plasters, and waterproofing compounds.
Improves workability, smoothness, and anti-sag properties.
Enhances durability and compressive strength in cementitious systems.
Functions as a reinforcing filler in natural and synthetic rubber products.
Improves tensile strength, tear resistance, and flexibility.
Acts as an anti-blocking, anti-caking, and flow-aid agent in plastics and polymers.
Provides smoothness and body to wood coatings and putties.
Improves sandability and helps achieve a uniform finish.
Used in CMP (Chemical Mechanical Polishing) slurries for silicon wafers.
Acts as a gentle abrasive in precision polishing of optical components.
Used in powders, foundations, and creams for oil absorption and texture enhancement.
Improves skin feel, mattifying effect, and flowability.
In some formulations, used as a flow aid or anti-caking agent.
Provides mild abrasiveness in scouring powders and toothpaste.
Enhances free-flowing properties in powdered detergents.
High whiteness and purity
Excellent oil absorption and surface area
Chemically inert and non-toxic
Compatible with solvent- and water-based systems
Improves mechanical strength and weathering resistance
HDPE or Kraft bags: 25 kg / 50 kg
Jumbo bags: 1 MT (customizable)
Moisture barrier inner liners available on request
Product Details:
| Minimum Order Quantity | 100 Kg |
| SiO2 Content | 99.5% |
| Mesh Size | 325 Mesh |
| Grade | Mycosil - 200M |
| Packaging Size | 50 kg |
| Purity | 99% |
| Form | Powder |
| Usage/Application | Construction Industry |
| Packaging Type | HDPE Bag |
| Color | White |
| Brand | Astrra Chemicals |
| Country of Origin | Made in India |
Uses & Applications of Pure Silica Powder / Sand / Grits for FRP, composite, and resin systems, suitable for technical datasheets, brochures, tenders, and customer presentations.
Pure Silica Powder / Sand / GritsUses & Applications in FRP / Composite / Resin SystemsOverviewPure Silica (SiO₂), available in micronized powder, graded sand, and controlled-size grits, is one of the most widely used functional fillers and reinforcing extenders in Fiber Reinforced Plastics (FRP) and polymer composite formulations. Owing to its high hardness, chemical inertness, thermal stability, and controlled particle size distribution, silica plays a critical role in enhancing mechanical strength, dimensional stability, surface finish, and cost optimization of resin-based systems.
Pure silica is compatible with unsaturated polyester, vinyl ester, epoxy, phenolic, and polyurethane resins.
Functional Roles in FRP & Composite Systems1. Reinforcing Filler for Mechanical StrengthImproves compressive strength, abrasion resistance, and hardness
Enhances load-bearing capacity in filled resin systems
Reduces resin-rich zones and shrinkage stresses
Applications:
FRP panels and gratings
Structural laminates
Machine housings and industrial enclosures
Micronized silica powder provides controlled viscosity build-up
Improves flow control without adversely affecting curing
Enhances fiber wet-out and uniform resin distribution
Used in:
Hand lay-up and spray-up systems
Resin putties and repair compounds
Filled gel coat formulations
Acts as an efficient resin extender while maintaining performance
Allows formulation of high-solid, economical composites
Improves consistency in large-volume FRP production
Enhances surface smoothness and mold replication
Reduces warpage, sink marks, and surface waviness
Improves dimensional accuracy of molded components
Particle Selection:
Fine powder (≤10 µm): smooth finishes, gel coats
Sand / fine grit: structural laminates
Coarse grit: abrasion-resistant surfaces
Graded silica grits provide controlled surface roughness
Enhances slip resistance and wear durability
Applications:
FRP gratings
Anti-skid flooring panels
Walkways, stair treads, and industrial platforms
Improves heat resistance and dimensional stability at elevated temperatures
Acts as a non-combustible mineral filler
Supports fire-retardant resin formulations by reducing organic content
Silica is chemically inert and resistant to acids and solvents
Enhances durability of FRP components exposed to chemicals, moisture, and outdoor environments
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| Packaging Size | 50 kg |
| Grade | Industrial Grade |
| Type | Ground Calcium Carbonate (GCC) |
| Purity/Concentration | 99% |
| Usage/Application | Plastic Industry |
| Country of Origin | Made in India |
🌟 CALCIUM CARBONATE HEAVY (PURE) 🌟
Premium Mineral for Industrial Performance
Applications:
✔ Rubber – improves tensile strength & durability of tyres and products
✔ Construction – enhances strength & workability in mortar & concrete
✔ Ceramics – boosts density, whiteness & surface finish
✔ Agriculture – soil conditioner & pH regulator for better crop yield
Why Choose Us?
🔹 High Purity – Consistent Quality
🔹 Excellent Dispersion & Particle Size
🔹 Reliable Supply – Competitive Pricing
📦 Available in Bulk & Custom Packaging
Product Details:
| SiO2 Content | 99.5% |
| Mesh Size | 600 Mesh |
| Grade | Fume |
| Packaging Size | 50 Kg/bag |
| Purity | 99% |
| Usage/Application | Plastics and Rubber Industry |
| Physical State | Powder |
| Pack Type | HDPE Bag |
| Grade Standard | Technical Grade |
| Color | White |
| Brand | ASTRRA |
| Country of Origin | Made in India |
We are the leading manufactures, technical suppliers of White Silica Fume ( Microsilica ) in Chennai, Tamil Nadu,
Micronised Silica (Grade – 800 M), It is a highly reactive and fine-grained material consisting of amorphous silicon dioxide particles. While Micronised Silica (Grade – 800 M) finds extensive use in various construction applications, its utilization in FRP (Fiber Reinforced Polymer) and composite applications is also very effective and can enhance the performance of FRP composites.
Here are some applications and uses of Micronised Silica (Grade – 800 M) in FRP/Composite Applications:
Matrix Modification: Micronised Silica (Grade – 800 M) can be added to the polymer matrix, such as epoxy or polyester resin, to modify its properties. It improves the flowability and workability of the resin, allowing better wetting and impregnation of the fibers. This leads to improved fiber-matrix adhesion and mechanical properties of the composite.
Increased Mechanical Strength: Incorporating Micronised Silica (Grade – 800 M) into the FRP composite can enhance its mechanical strength. The Micronised Silica (Grade – 800 M) particles act as filler material, reinforcing the polymer matrix. This results in improved tensile, flexural, and compressive strength of the composite.
Reduced Shrinkage and Curing Time: Micronised Silica (Grade – 800 M) has a high surface area, which facilitates water retention in the composite matrix during curing. This helps to reduce shrinkage and prevent cracking. Additionally, Micronised Silica (Grade – 800 M) promotes the reaction between the resin and curing agents, accelerating the curing process and reducing the overall curing time.
Improved Thermal and Chemical Resistance: Micronised Silica (Grade – 800 M) enhances the thermal stability and chemical resistance of FRP composites. It acts as a barrier, reducing the permeability of the matrix to water, gases, and chemicals. This property is particularly advantageous in applications where the composite is exposed to harsh environmental conditions or corrosive substances.
Decreased Coefficient of Thermal Expansion: The addition of Micronised Silica (Grade – 800 M) to the polymer matrix can reduce the coefficient of thermal expansion of the FRP composite. This property is desirable when dimensional stability is crucial, as it helps minimize the risk of deformation or warping due to temperature variations.
It's worth noting that the use of Micronised Silica (Grade – 800 M) in FRP/Composite applications may vary depending on the specific requirements, composite system, and desired performance characteristics. Proper material selection, formulation, and testing are essential to ensure compatibility and achieve the desired results.
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| MgO Content | 32 % |
| Packaging Size | 50 kg |
| Whiteness | 92 % |
| Mesh Size | 300 Mesh |
| Application | Paper, Rubber, Composite, Paints, Detergent, Ceramics, Plastics |
| pH Value | 7.0 |
| Packaging Type | Brand New PP Bags |
| State | Powdered |
| Color | White |
| Moisture | < 0.5 % |
| Form | Fine Powder |
| Country of Origin | Made in India |
French Chalk, also known as Putty Powder or Talc, is a soft, white to off-white magnesium silicate mineral (Mg₃Si₄O₁₀(OH)₂), known for its smoothness, chemical inertness, and moisture resistance. Grade A2 is a refined grade, offering good whiteness, fine particle size, and consistent performance in industrial and decorative applications.
Whiteness: Typically above 85%
Oil Absorption: Moderate to high
Particle Size: Fine, micronized
Softness: 1 on Mohs hardness scale
Structure: Lamellar, platy particles
�� Uses & Applications of French Chalk / Putty Powder (Grade A2) �� 1. Paints, Primers & Putties
Acts as a filler and extender pigment in:
Wall putty
Distempers
Primers
Improves smoothness, spreadability, and opacity.
Enhances adhesion and reduces cracking in wall finishes.
Provides a matte texture and helps reduce the cost of formulations.
�� 2. Polishing Compounds & Metal Finishing
Used in metal polishing cakes and powders.
Acts as a gentle abrasive to produce a fine finish on metals.
Widely used in jewelry cleaning, automotive polishing, and hardware finishing.
�� 3. Rubber, Textile & Leather Industry
Serves as a lubricant and anti-stick agent in rubber processing.
Applied as a release agent in latex gloves and molded rubber goods.
In textiles, used for finishing and stiffening fabric.
Prevents leather surfaces from sticking or cracking.
�� 4. Construction & Building Materials
Commonly used in interior wall putty and tile adhesives.
Enhances smooth troweling, finish, and workability.
Fills micro-cracks and levels out surface imperfections before painting.
�� 5. Cosmetics & Personal Care
Used in body powders, face powders, and soaps for smooth feel and moisture absorption.
Inert and skin-safe, making it suitable for personal care use.
�� 6. Wood Finishes & Furniture Polish
Blended in wood polish pastes to enhance the sheen and feel of furniture.
Used to fill grain in open-pore woods before painting or varnishing.
⚙️ 7. Plastic & Polymer Industry
Acts as a filler and reinforcing agent in thermoplastics.
Enhances mould flow, heat resistance, and surface finish in plastic components.
✅ Benefits of French Chalk / Putty Powder (Grade A2):
High purity and whiteness
Soft, smooth texture
Chemically inert and non-reactive
Excellent dispersion in aqueous and solvent systems
Cost-effective filler and performance improver
�� Packaging Options:
25 kg / 50 kg HDPE woven sacks
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| Packaging Size | 50 kg |
| Packaging Type | Brand New PP bags |
| State | Powdered |
| Color | White |
| Country of Origin | Made in India |
French Chalk / Putty Powder (Grade - A1) is a natural, fine white mineral powder primarily composed of talc or similar soft minerals. It is widely used as a filler, extender, and lubricant in various industries due to its fine particle size, softness, and inertness.
Here’s a brief overview of the uses and applications of French Chalk / Putty Powder (Grade - A1):
1. Paints and CoatingsPurpose: Filler and extender.
Applications:
Used as a filler to improve paint opacity, smoothness, and texture.
Enhances paint spreadability and reduces cracking.
Acts as a matting agent in some coatings.
Purpose: Filler and processing aid.
Applications:
Incorporated into rubber and plastic compounds to improve smoothness and processability.
Reduces friction between processing equipment and material.
Improves surface finish and mechanical properties.
Purpose: Filler and coating agent.
Applications:
Used as a filler to improve brightness, smoothness, and opacity in paper production.
Enhances printability and surface properties.
Purpose: Absorbent and texture enhancer.
Applications:
Used in face powders, talcum powders, and other cosmetic products for smooth texture and oil absorption.
Provides a silky feel and reduces skin irritation.
Purpose: Filler and additive.
Applications:
Used to improve workability and texture in ceramic bodies and molds.
Helps reduce shrinkage and cracking during firing.
Purpose: Filler and texture improver.
Applications:
Incorporated into wall putty formulations to enhance smoothness and adhesion.
Provides a fine finish on plastered surfaces before painting.
Fine particle size and soft texture.
Chemically inert and stable.
Good lubricating properties.
Enhances surface finish and mechanical properties.
Additional Information:
Product Details:
| Minimum Order Quantity | 10 Kg |
| Purity % | 99% |
| Country of Origin | Made in India |
Fumed Silica – Grade AC 200 for FRP, composite, and resin systems, suitable for technical datasheets, product brochures, specifications, and customer communications.
Fumed Silica – Grade AC 200Uses & Applications in FRP / Composite / Resin SystemsProduct OverviewFumed Silica Grade AC 200 is a highly dispersed, amorphous silicon dioxide produced via flame hydrolysis, characterized by extremely fine primary particle size, very high specific surface area (~200 m²/g), and low bulk density. These properties make AC 200 an exceptionally effective rheology control and thixotropic agent in Fiber Reinforced Plastics (FRP) and advanced composite resin formulations.
AC 200 is widely used in unsaturated polyester, vinyl ester, epoxy, polyurethane, and phenolic resin systems, particularly where anti-sag, anti-settling, and flow control are critical.
Key Functional Roles in FRP & Composite Systems1. Superior Thixotropy & Rheology ControlProvides strong thixotropic behavior at low dosage
Prevents resin sagging and dripping on vertical and overhead laminates
Maintains flow under shear, ensuring easy application
Ideal for:
Hand lay-up and spray-up FRP processes
Filament winding resins
Pultrusion resin baths
Effectively prevents resin run-off from glass fiber reinforcement
Controls resin-rich zones and ensures uniform laminate thickness
Improves dimensional accuracy of molded FRP components
Keeps fillers, pigments, and additives uniformly suspended
Enhances storage stability of filled resin formulations
Prevents phase separation during processing and storage
Enhances resin-fiber interaction for better wet-out
Reduces air entrapment and void formation
Improves interlaminar bonding and structural integrity
Minimizes pinholes, sag marks, and flow lines
Improves mold surface replication
Produces smoother, defect-free FRP surfaces
Applications:
Gel coats and top coats
Cosmetic FRP panels
Automotive and marine FRP parts
Improves interlaminar shear strength
Enhances resistance to crack propagation
Supports dimensional stability during curing
| Resin System | Performance Contribution |
|---|---|
| Unsaturated Polyester | Thixotropy, anti-sag, filler suspension |
| Vinyl Ester | Flow control, chemical resistance stability |
| Epoxy | Rheology control, crack resistance |
| Polyurethane | Anti-settling, viscosity control |
| Phenolic | Thermal stability, uniform filler dispersion |
FRP tanks, pipes & ducts
Structural FRP laminates
Automotive FRP body panels
Marine hulls & components
Electrical insulation FRP enclosures
Gel coats and surface coatings
Additional Information:
Product Details:
| Minimum Order Quantity | 10 Kg |
| Country of Origin | Made in India |
| Packing | 10 Kgs |
| Purity | 99.5% |
Fumed Silica – Erosil® NV/200 XL 5M for FRP, composite, and resin systems, suitable for technical datasheets, customer approvals, brochures, and specification documents.
Fumed Silica – Erosil® NV/200 XL 5MErosil® NV/200 XL 5M is a hydrophilic fumed silica with a very high specific surface area (~200 m²/g), manufactured through flame hydrolysis of silicon tetrachloride. The “XL” low-structure variant and 5M densified form provide improved flowability, reduced dusting, and easier incorporation while retaining strong thixotropic efficiency.
This grade is specifically suited for FRP and advanced composite resin formulations requiring precise rheology control, excellent anti-sag performance, and stable filler suspension at low addition levels.
Compatible with unsaturated polyester, vinyl ester, epoxy, polyurethane, and phenolic resin systems.
Key Functional Roles in FRP & Composite Resin Systems1. Advanced Thixotropy & Rheology ControlImparts strong shear-thinning behavior to resin systems
Maintains viscosity at rest while allowing easy flow during processing
Enables controlled resin application without dripping or slump
Ideal for:
Hand lay-up and spray-up FRP processes
Filament winding
Pultrusion resin baths
Prevents resin run-off on vertical and overhead laminates
Ensures uniform laminate thickness
Minimizes resin pooling and edge sagging
Keeps mineral fillers, pigments, flame retardants, and additives uniformly dispersed
Prevents phase separation during storage and processing
Enhances shelf stability of filled resin systems
Enhances resin-fiber interface bonding
Reduces air entrapment and void formation
Improves interlaminar shear strength and laminate quality
Reduces flow lines, sag marks, and pinholes
Improves mold surface replication
Delivers smoother, defect-free FRP surfaces
Common in:
Gel coats
Top coats
Cosmetic FRP components
Densified (5M) form reduces handling losses and dust generation
XL low-structure grade allows easier dispersion with standard mixers
Improved batch-to-batch consistency in production
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| Packaging Size | 50 Kgs |
| Brand | ASTRRA BRAND |
| Coverage Area | TOTAL SURFACE |
| Usage/Application | Construction |
| GRADE | 500MESH |
Micro Putty Powder (Grade - 500M) is a fine-grade mineral powder used primarily as a filler and extender in various industrial and construction applications. Its fine particle size (500 mesh) allows it to provide smooth finishes and improve surface properties.
Here’s a brief overview of the uses and applications of Micro Putty Powder (Grade - 500M):
1. Paints and Coatings
Purpose: Filler and texture enhancer.
Applications:
Used as a filler to improve paint opacity, smoothness, and adhesion.
Helps control viscosity and reduce production costs by replacing more expensive raw materials.
Enhances durability and weather resistance of coatings.
2. Construction and Wall Putty
Purpose: Surface leveling and finishing.
Applications:
Used in wall putty formulations to provide a fine, smooth surface before painting.
Helps fill minor cracks and imperfections in plastered walls.
Improves adhesion and workability of putty products.
3. Plastics and Polymers
Purpose: Filler and reinforcement.
Applications:
Incorporated as a filler in plastics, rubber, and polymer composites to improve strength and reduce shrinkage.
Enhances surface finish and reduces material costs.
4. Paper Industry
Purpose: Coating and filling agent.
Applications:
Used as a filler in paper coatings to improve brightness, smoothness, and printability.
Enhances paper quality and reduces ink absorption.
5. Adhesives and Sealants
Purpose: Viscosity control and filler.
Applications:
Used to control viscosity and improve texture in adhesive formulations.
Provides bulk and enhances mechanical properties.
6. Ceramics and Refractories
Purpose: Filler and binder.
Applications:
Used in ceramic formulations to improve smoothness and reduce defects.
Helps control thermal expansion and firing behavior.
Key Features of Micro Putty Powder (Grade - 500M):
Very fine particle size (~500 mesh) ensures smooth texture.
High whiteness and chemical stability.
Enhances mechanical properties and surface finish.
Cost-effective extender and filler.
Product Details:
| Minimum Order Quantity | 100 Kg |
| Grade Standard | Industrial Grade |
| Brand | Astrra Chemicals |
| Form | Powder |
| Usage/Application | Industrial |
| Purity | 95% |
| Grade | A1 |
| Packaging Size | 50 KGS |
| Density | 1,9 - 2,1 g/cm3 |
| Packaging Type | HDPE BAGS |
| PH | 13 |
Uses & Applications of Magnesium Aluminium Silicate (MAS) for FRP, composites, and resin systems, suitable for datasheets, technical brochures, or customer communication.
Magnesium Aluminium Silicate (MAS)Uses & Applications in FRP / Composite / Resin SystemsOverviewMagnesium Aluminium Silicate (MAS) is a naturally occurring, highly refined phyllosilicate mineral widely used as a rheology modifier, thixotropic agent, reinforcing filler, and suspension stabilizer in Fiber Reinforced Plastics (FRP) and advanced polymer composite systems. Its plate-like particle morphology, high surface area, and controlled swelling behavior make it especially effective in thermoset resin formulations.
MAS is compatible with polyester, vinyl ester, epoxy, and phenolic resin systems, delivering improved processing stability and enhanced end-use performance.
Key Functions in FRP & Composite Systems1. Rheology Control & Thixotropy EnhancementProvides controlled viscosity build-up at low shear while maintaining flow under application shear
Prevents resin drainage in vertical and overhead FRP laminates
Improves fiber wet-out and resin distribution during lay-up and molding
Applications:
Hand lay-up
Spray-up processes
Filament winding
Pultrusion
Effectively prevents filler, pigment, and fiber settling in resin systems
Enhances storage stability of pre-filled resin formulations
Ensures uniform filler dispersion throughout the composite matrix
Applications:
Filled polyester resins
Mineral-loaded FRP panels
Thick gel coat formulations
Improves interlaminar strength and dimensional stability
Reduces micro-cracking and shrinkage during curing
Enhances impact resistance and surface durability
End Benefits:
Improved structural integrity
Reduced warpage in molded FRP components
Contributes to smooth surface finish in molded and coated FRP products
Reduces surface defects such as pinholes, sag lines, and resin pooling
Enhances mold replication accuracy
Applications:
FRP automotive parts
Marine components
Electrical enclosures
Sanitary ware composites
Maintains consistent viscosity over time
Minimizes phase separation in resin-filler blends
Improves shelf life of resin master batches
| Resin Type | Performance Contribution |
|---|---|
| Unsaturated Polyester Resins | Anti-sag, filler suspension, shrinkage control |
| Vinyl Ester Resins | Thixotropy, chemical resistance stability |
| Epoxy Resins | Flow control, crack resistance, improved wet-out |
| Phenolic Resins | Thermal stability, filler dispersion |
Additional Information:
Product Details:
| Minimum Order Quantity | 10 Kg |
| Physical State | Liquid |
| Grade Standard | Industrial Grade |
| Degree of Hydrolysis | Fully Hydrolyze |
| Packaging Details | 1 litre Bottle |
| Brand | Astrra Chemicals |
| Packaging Size | 25-50 kg/bag |
| Packaging Type | Drum |
| Purity % | 99.9% |
| Usage/Application | Emulsion Stabilizer |
| Country of Origin | Made in India |
| Formula | (C2H3Cl)n |
PVA SOLUTION ( MOULD RELEASING AGENT )
We are the leading manufactures, exporters,technical developers and suppliers of PVA SOLUTION ( MOULD RELEASING AGENT ) in Chennai, Tamil Nadu,
Polyvinyl Alcohol (PVA) Liquid – Mould Releasing Agent is a water-based, film-forming polymer solution widely used in composite molding and casting industries as a release agent. It forms a thin, flexible barrier between the mold surface and the molded part, allowing clean separation without damaging the surface or mold. PVA liquid is especially useful in fiber-reinforced plastic (FRP) and polyester/epoxy resin applications.
✅ Uses & Applications of Polyvinyl Alcohol (PVA) Liquid – Mould Releasing Agent �� 1. FRP / Composite Molding
Used as a release film when working with polyester, vinyl ester, or epoxy resins.
Applied on molds made of metal, wood, plaster, or fiberglass to prevent sticking.
Enables smooth release of molded parts such as:
Boat hulls
Automotive panels
Bathtubs and tanks
Composite sheets and panels
�� 2. Silicone & Urethane Casting
Serves as a temporary mold barrier when casting silicone, polyurethane, or plaster.
Useful for applications involving molds with fine details or complex shapes.
�� 3. Thermoset Resin Molding
Ideal for use in closed-mold systems and compression molding where heat curing of resins is involved.
Prevents sticking and surface defects on molded thermoset parts.
�� 4. Release Agent in Latex and Rubber Processing
Used for glove molds, balloon molds, and foam casting.
Forms a non-toxic, water-soluble film that peels off after the molding process.
�� 5. Soap and Candle Molding
Acts as a barrier layer between soap/candle material and molds.
Facilitates easy release without damaging detailed mold textures.
��️ 6. Concrete & Plaster Casting
Used in decorative concrete moldings, architectural precast elements, and art casting.
Prevents bonding of concrete or plaster to reusable molds.
�� How PVA Liquid Is Used
Applied by brush, spray, or sponge to clean, sealed mold surface.
Forms a thin, flexible, water-soluble film upon drying (usually within 15–30 minutes).
Parts can be easily demolded after curing/resin setting.
Residual PVA can be washed off with warm water after demolding.
�� Key Properties of PVA Liquid (Mould Release Grade)
Water-based & eco-friendly
Non-toxic & non-flammable
Leaves no residue on final part (if properly washed)
Compatible with most thermoset resins
Film thickness: ~5–10 microns
Soluble in warm water
Additional Information:
Product Details:
| Minimum Order Quantity | 50 Kg |
| Packaging Size | 50 Kgs |
| Packaging Type | HDPE Bag |
| Mesh | 500m |
| Applications | FRP Moulding |
| Brand | Astrra Chemicals |
| Usage/Application | Industrial |
Certificate of analysis:
|
Contents |
|
Min. % |
Max. % |
|
Silica |
sio2 |
56. 00% |
58. 00% |
|
Alumina |
al2o3 |
- |
00. 25% |
|
Ferric oxide |
fe2o3 |
- |
00. 75% |
|
Calcium oxide |
cao |
- |
04. 00% |
|
Magnesium oxide |
mgo |
28. 00% |
30. 00% |
|
Loss on ignition |
|
07. 00% |
08. 00% |
|
Specific gravity |
|
02. 95% |
- |
|
PH of 5% slurry |
|
08. 00% |
08. 50 |
Product Details:
| Minimum Order Quantity | 100 Kg |
| Purity | 99.5% |
| Packaging Size | 10 kg |
| Form | Powder |
| Pack Size | 10 kg |
| Application | FRP / Composite |
| Country of Origin | Made in India |
Fumed Silica (Aerosil / Erosil NV/200, A-Grade) It is widely used in the FRP (Fiber-Reinforced Plastic) and composite industry, particularly for improving the performance and processing of resins in advanced composite applications.
✅ Uses & Applications of Fumed Silica (Aerosil / Erosil NV/200) in the FRP/Composite Industry �� 1. Thixotropic Agent for Resin SystemsEnhances viscosity of epoxy, polyester, and vinyl ester resins, allowing for better control over the flow properties.
Acts as a thickening agent for molding, casting, and laminating processes in FRP manufacturing.
Provides non-sagging, non-dripping properties to the resin, especially for vertical surfaces or intricate molds.
Used in gelcoats to improve surface smoothness, thickness control, and scratch resistance.
Enhances the weathering resistance of composite parts, making them suitable for applications exposed to harsh UV conditions.
Helps improve surface gloss and durability, particularly in marine, automotive, and architectural coatings.
Added to composite resins to reinforce mechanical properties, including flexural strength, impact resistance, and abrasion resistance.
Improves the dimensional stability of FRP parts, ensuring greater longevity and reliability in high-performance applications.
Often used in structural components such as panels, bumpers, boat hulls, and aerospace parts to enhance overall durability.
In resin transfer molding (RTM) and resin infusion systems, fumed silica NV/200 provides superior viscosity control during the resin impregnation of fibers.
Ensures uniform distribution of resin throughout the fiber mat, preventing issues like resin starvation or air pockets.
Improves wet-out and ensures that the resin penetration is consistent across all layers, particularly in thick laminates.
Used in composite coatings to achieve high thixotropy, preventing sagging or dripping on vertical and complex surfaces.
Helps create thicker layers of coatings that are uniform and easy to apply.
In high-performance coatings (such as those used in aerospace and marine applications), it improves scratch resistance, adhesion, and abrasion resistance.
Due to its nano-particle structure, fumed silica NV/200 can improve the thermal stability of resin systems, making them suitable for high-temperature applications.
Often used in insulating compounds and potting materials for electrical components and electronic systems due to its dielectric properties.
Additional Information: