Astrra Chemicals
Astrra Chemicals
Chennai, Tamil Nadu
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Silica Powder

Leading Manufacturer of porous silica nanoparticles, silica sand processed brown, mineral additives for 3d construction printing, snow white silica powder ( grade - 150 / 200 ) and lime powder (hydrated lime) from Chennai.

Porous Silica Nanoparticles

Porous Silica Nanoparticles
  • Porous Silica Nanoparticles
  • Porous Silica Nanoparticles
  • Porous Silica Nanoparticles
  • Porous Silica Nanoparticles
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Approx. Price: Rs 38 / GramGet Latest Price
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Product Details:

Minimum Order Quantity50 Gram
Packaging Size25 kg
StatePowdered
Usage/ApplicationWater Filter
GradeGrade I
ColorWhite
Country of OriginMade in India

We are the stalwarts in the domain of manufacturing, supplying, wholesaling and exporting Porous silica (Natural)  These flavor grade chemicals are processed using pure and accurate ingredients that procured from reliable and trusted vendors of the market. Our range is available in the market at leading prices in packs of different quantities.
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Additional Information:

  • Production Capacity: 10000 TONS
  • Delivery Time: IMMEDIATE
  • Packaging Details: NEW BRANDED HDPEBAGS
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Silica Sand Processed Brown

Silica Sand Processed Brown
  • Silica Sand Processed Brown
  • Silica Sand Processed Brown
  • Silica Sand Processed Brown
  • Silica Sand Processed Brown
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Approx. Price: Rs 12.5 / KgGet Latest Price
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Product Details:

GradeConstruction
Usage/ApplicationConstruction
SiO2 Content90%
Mesh Size30-80 Mesh
Grade / Size50-150 Mesh
Silica Content98%
Packaging detail50 Kg Bag
ApplicationConstruction
FormGranules
Packaging Size50 kg, 50 Kg
ColorBrown

Silica Sand (Brown) is a naturally occurring granular material composed mainly of quartz (SiO₂) with a characteristic brown hue due to the presence of iron oxides or other minerals. It is valued for its hardness, chemical inertness, high melting point, and grain uniformity, making it suitable for a wide range of industrial and commercial applications.
Here’s a brief overview of the uses and applications of Brown Silica Sand:
1. Foundry Industry

Purpose: Molding and core sand.

Applications:

Used in metal casting for making molds and cores due to high refractoriness and strength.

Withstands high temperatures and resists metal penetration.

2. Construction Industry

Purpose: Aggregate and filler.

Applications:

Used in concrete, mortars, and asphalt mixes for strength and durability.

Essential component in flooring, grouts, and cement-based products.

Applied as backfill material in civil engineering projects.

3. Glass Manufacturing

Purpose: Raw material.

Applications:

Acts as a key ingredient in the production of brown, amber, or dark glass bottles and containers.

Brown silica sand may be chosen based on cost or specific melting behavior despite lower purity than white silica.

4. Water Filtration

Purpose: Filtration media.

Applications:

Used in drinking water and wastewater treatment plants to filter out impurities and suspended particles.

Acts as a support bed for filtration units.

5. Oil and Gas Industry

Purpose: Proppant in hydraulic fracturing.

Applications:

Used in fracking operations to keep rock fissures open for oil and gas extraction.

Brown sand is often more economical than white sand for certain well conditions.

6. Abrasives and Blasting

Purpose: Cleaning and surface preparation.

Applications:

Utilized in sandblasting and abrasive blasting for rust and paint removal.

Prepares metal and concrete surfaces for coating or finishing.

7. Sports and Landscaping

Purpose: Surface dressing and leveling.

Applications:

Used in golf courses, horse arenas, and sports fields for leveling and drainage.

Enhances surface firmness and reduces dust.

8. Ceramics and Refractories

Purpose: Raw material and filler.

Applications:

Used in ceramic glazes, tiles, and firebricks.

Offers thermal resistance and acts as a stabilizing agent.

Key Features of Brown Silica Sand:

Hard and durable quartz grains.

Chemically inert with moderate to high purity.

Slightly lower purity than white silica sand but more cost-effective in many applications.

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MINERAL ADDITIVES FOR 3D CONSTRUCTION PRINTING

MINERAL ADDITIVES FOR 3D CONSTRUCTION PRINTING
  • MINERAL ADDITIVES FOR 3D CONSTRUCTION PRINTING
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Approx. Price: Rs 25 / KgGet Latest Price
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Product Details:

GradeULTRAFINE ( MICROFINE )
SiO2 Content95%
Mesh Size200 Mesh
FormPowder
ApplicationConstruction
Packaging Size40 Kgs
StatePowdered
Packaging TypeBags
Country of OriginMade in India

MINERAL ADDITIVES FOR 3D PRINTING

Here’s a detailed overview of mineral additives used in 3D construction printing and their uses & applications:

🔹 1. Silica Fume (Microsilica)

Use: Pozzolanic additive
Application:

  • Improves strength and durability of printed structures

  • Enhances rheology and reduces bleeding

  • Used in high-performance concrete (HPC) for 3D walls and load-bearing components

🔹 2. Metakaolin

Use: Supplementary Cementitious Material (SCM)
Application:

  • Improves early strength and surface finish

  • Reduces shrinkage cracking in printed layers

  • Enhances adhesion between layers in vertical builds

🔹 3. Fly Ash (Class F and C)

Use: Partial replacement for cement
Application:

  • Improves flowability and workability of printing mix

  • Reduces environmental footprint of concrete

  • Used in 3D printed slabs and panels for eco-friendly construction

🔹 4. Ground Granulated Blast Furnace Slag (GGBS)

Use: Cementitious additive
Application:

  • Enhances long-term strength and durability

  • Improves resistance to sulfate and chloride attack

  • Ideal for marine and infrastructure 3D printed structures

🔹 5. Limestone Powder / Filler Grade Calcium Carbonate

Use: Rheology modifier and filler
Application:

  • Improves the printability of the mix

  • Reduces binder demand and shrinkage

  • Suitable for decorative or non-structural 3D prints

🔹 6. Nano Silica / Colloidal Silica

Use: Reactivity enhancer
Application:

  • Speeds up hydration for early strength gain

  • Increases density and reduces porosity

  • Useful in intricate, fast-setting architectural 3D elements

🔹 7. Bentonite / Attapulgite Clay

Use: Thixotropic agent / viscosity modifier
Application:

  • Prevents slump and helps maintain shape post-extrusion

  • Useful in vertical structures and cantilevered components

🔹 8. Basalt or Quartz Powder

Use: Mineral reinforcement
Application:

  • Adds compressive strength and surface hardness

  • Used in wear-resistant and fire-resistant 3D elements

🔹 9. Vermiculite / Perlite

Use: Lightweight aggregate
Application:

  • Reduces density for thermal insulation applications

  • Ideal for 3D printed partition walls and panels

🔹 10. Natural Pozzolans (e.g., Volcanic Ash, Diatomite)

Use: SCM and performance enhancer
Application:

  • Increases chemical resistance and durability

  • Useful in green building applications


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Snow White Silica Powder ( Grade - 150 / 200 )

Snow White Silica Powder ( Grade - 150 / 200 )
  • Snow White Silica Powder ( Grade - 150 / 200 )
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Approx. Price: Rs 20 / KgGet Latest Price
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Product Details:

Minimum Order Quantity50 Kg
GradeIndustrial
SiO2 Content99%
Mesh Size100 Mesh
Purity99%
Packaging Size50 kg
Grade StandardA Grade
FormGranular
Usage/ApplicationIn metal Casting, In glassmaking, In Water filtration
Country of OriginMade in India

Snow White Silica Powder (Grade - 150 / 200 M)

We have emerged as a prominent manufacturer, supplier, wholesaler and exporter of high quality Snow White Silica Powder (Grade - 150 / 200 M) at Chennai, Tamil Nadu, India.

Snow White Silica Powder (Grade - 150 / 200 M) is a high-purity, finely ground silica used widely across industries due to its whiteness, hardness, chemical inertness, and fine particle size. Below are its brief uses and applications in epoxy flooring, construction, and other areas:

�� 1. Epoxy Flooring Applications
  • Filler and Extender: Enhances mechanical strength, wear resistance, and surface finish of epoxy floors.

  • Anti-slip Agent: Improves surface texture and skid resistance when used in topcoat or broadcast layers.

  • Surface Hardness: Provides scratch and abrasion resistance in high-traffic areas.

��️ 2. Construction Applications
  • Cement and Mortar Filler: Improves workability and reduces shrinkage in concrete mixes.

  • Tile Adhesives and Grouts: Ensures consistency, strength, and whiteness in formulation.

  • Sealants and Coatings: Acts as a reinforcing agent for better binding and UV resistance.

�� 3. General / Industrial Applications
  • Glass Manufacturing: High purity grade is used in the production of specialty glass and ceramics.

  • Paints and Coatings: As a matting agent and to enhance durability and chemical resistance.

  • Rubber and Plastics: Acts as a reinforcing filler to improve strength and flexibility.

  • Foundry: Used in molds and cores for precision casting.

Key Properties
  • High brightness and whiteness

  • Controlled particle size (150 / 200 mesh)

  • Chemically inert and non-reactive

  • Excellent thermal and mechanical stability

 

 

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Additional Information:

  • Item Code: AC138
  • Production Capacity: 10000 TONS
  • Delivery Time: IMMEDIATE
  • Packaging Details: BRAND NEW HDPE BAGS
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SNOW WHITE SILICA POWDER ( GRADE - 150 / 200 )

SNOW WHITE SILICA POWDER ( GRADE - 150 / 200 )
  • SNOW WHITE SILICA POWDER ( GRADE - 150 / 200 )
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Approx. Price: Rs 20 / KgGet Latest Price

Product Details:

Minimum Order Quantity100 Kg
GradeConstruction
SiO2 Content99%
Mesh Size150 Mesh
Packaging Size50 kg
Purity99%
Usage/ApplicationConstruction Industry

Snow White Silica Powder (Grade – 150/200 mesh) is a high-purity, ultra-fine white powdered form of silica (SiO₂). With its high brightness, chemical inertness, and fine particle size, it finds wide-ranging applications across industries like paint, plastics, rubber, ceramics, construction, cosmetics, and more.

Uses & Applications of Snow White Silica Powder (Grade – 150/200 Mesh): 🔹 1. Paints, Coatings & Primers
  • Acts as an anti-settling, matting, and rheology control agent.

  • Improves durability, opacity, and weather resistance in exterior and interior paints.

  • Used in putties and primers to enhance whiteness, spreadability, and smooth finish.

🔹 2. Plastics & Polymers
  • Functions as a functional filler in PP, PVC, and HDPE to improve rigidity, thermal resistance, and reduce production cost.

  • Enhances surface finish and dimensional stability in masterbatches and plastic compounds.

🔹 3. Rubber Industry
  • Acts as a reinforcing filler in rubber compounds, improving abrasion resistance, tensile strength, and tear strength.

  • Used in footwear soles, hoses, and rubber sheets for whiteness and strength.

🔹 4. Construction Chemicals
  • Added in tile adhesives, grouts, white cement-based putties, and skim coats for enhanced smoothness and brightness.

  • Improves flow and workability in self-leveling compounds and repair mortars.

🔹 5. Ceramics & Glass
  • Used in ceramic glazes, vitrified tiles, and tableware to improve whiteness and thermal stability.

  • Acts as a silica source in specialty glass formulations.

🔹 6. Detergents & Cleaning Products
  • As a mild abrasive and carrier in premium detergent powders, toilet cleaners, and scouring agents.

🔹 7. Cosmetics & Personal Care
  • Used in face powders, body powders, and exfoliating scrubs for its ultra-white color, smooth texture, and absorbent properties.

  • Acts as a flow aid and bulking agent in personal care formulations.

🔹 8. Adhesives & Sealants
  • Improves consistency, hardness, and filler loading without affecting reactivity or curing in epoxy and silicone sealants.

🔹 9. Agriculture & Animal Feed
  • Used in pesticide dust formulations or as a carrier for active ingredients.

  • Also functions as a non-toxic anti-caking agent in some feed additives.

📌 Typical Characteristics of 150/200 Mesh Snow White Silica Powder:
  • Particle Size: ~75–100 microns

  • Brightness: ≥ 98%

  • SiO₂ Content: > 99%

  • Whiteness: Ultra white (ideal for color-sensitive applications)

  • Oil Absorption: Moderate to high (helps in thickening applications)

  • Moisture: < 0.2%


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Lime Powder (Hydrated Lime)

Lime Powder (Hydrated Lime)
  • Lime Powder (Hydrated Lime)
  • Lime Powder (Hydrated Lime)
  • Lime Powder (Hydrated Lime)
  • Lime Powder (Hydrated Lime)
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Approx. Price: Rs 23 / KgGet Latest Price

Product Details:

Minimum Order Quantity50 Kg
Purity99%
Physical StatePowder
Grade StandardIndustrial Grade
Packaging Size20 Kg
Packaging TypeBag
ColorWhite
CAS No1305-62-0
Packaging25 Kg HDPE Bag, 50 Kg HDPE Bag
Molar Mass74.093 g/mol
Chemical FormulaCa(OH)2
Density2.21 g/mL
BrandAstrra Chemicals
Melting Point580 Degree C


We are the leading manufactures, exporters,technical developers and suppliers Hydrated Lime ( Calcium Hydroxide ) in Chennai, Tamil Nadu, 
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Sanklesh Chabria (Managing Partner)
Astrra Chemicals
No.532/1B 3, Vanagaram Road, Ambattur, Chennai - 600053, Tamil Nadu, India
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