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Astrra Chemicals
Astrra Chemicals


Concrete Mineral Admixture

  • Aluminium oxide
  • Foundry sand
  • Vermiculite
  • Calcium hydroxide
  • Lime
  • Calcium oxide
  • Micronised mica
  • Sodium meta silicate
  • Micronised carbon black
  • Micronised dolomite
  • Ath
  • Sand m72
  • Copper slag
  • Micaceous iron oxide
  • Foaming agent
  • Sodium hydroxide
  • Pumice stone powder
  • Marble powder
  • Micro clay
  • Red oxide
  • Sodium silicate ( liquid & powder )
  • Lime stone powder
  • Yellow oxide
  • Aluminium silicate
  • Calcium chloride
  • Iron oxide
  • Betonite
  • Zeolite
  • Asbestose fibre powder
  • Diatomaceous earth
  • Ggbs
  • Magnesium silicate
  • Perlite powder
  • Metakaolin
  • Microsilica
  • Nano silica
  • Pva resins
  • Rice husk ash
  • Silica flour
  • Silica grits pure

Granulated Blast Surface Slag GGBS CEMENT SLAG

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Approx. Rs 12.5 / kgGet Latest Price

Product Details:
Minimum Order Quantity100 kg
StatePowdered
Packaging Size50 KGS
ColorBLACK
Packaging TypeHDPE BAGS

GROUND GRANULATED BLAST FURANCE SLAG ( GGBS )

GGBS is used to make durable concrete structures in combination with ordinary portland cement and/or other pozzolanic materials. GGBS has been widely used in Europe, and increasingly in the United States and in Asia (particularly in India, Japan and Singapore) for its superiority in concrete durability, extending the lifespan of buildings from fifty years to a hundred years.

 

Two major uses of GGBS are in the production of quality-improved slag cement, namely Portland Blastfurnace cement (PBFC) and high-slag blast-furnace cement (HSBFC), with GGBS content ranging typically from 30 to 70% and in the production of ready-mixed or site-batched durable concrete.

Concrete made with GGBS cement sets more slowly than concrete made with ordinary Portland cement, depending on the amount of GGBS in the cementitious material, but also continues to gain strength over a longer period in production conditions. This results in lower heat of hydration and lower temperature rises, and makes avoiding cold joints easier, but may also affect construction schedules where quick setting is required.

 

Use of GGBS significantly reduces the risk of damages caused by alkali–silica reaction (ASR), provides higher resistance to chloride ingress — reducing the risk of reinforcement corrosion — and provides higher resistance to attacks by sulfate and other chemicals.


 

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Lime Powder (Hydrated Lime)

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Product Details:
Minimum Order Quantity50 Kilogram
BrandASTRRA

Lime Powder

( FOR CONCRETE APPLICATION )

CERTIFICATE OF ANALYSIS LIME

Chemical Property

Content

Lime as Ca (OH)2

90%

Active CaO

68%

Acid insolubles

1 %

Max

Iron Alumina as Fe2O3 Al2O3

Traces

Magnesia as MgO

0.6%

Max

Physical Property

Mesh (BSS)

250

General Data

Free flowing fine powder devoid of grits and impurities

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Calcium Oxide

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Approx. Rs 21 / KilogramGet Latest Price

( for concrete application )

certificate of analysis 

chemical property :

content

lime as ca (oh)2

:

90%

 

active cao

:

68%

 

acid insolubles

:

1 %

max

iron alumina as fe2o3 al2o3

:

traces

 

magnesia as mgo

:

0. 6%

max

 

physical property :

mesh (bss)              :

250

 

 general data    :

free flowing fine powder devoid of grits and impurities 


Additional Information:

  • Minimum Order Quantity: 50 Kilogram
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    Micronised Carbon Black

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    Approx. Rs 48 / KilogramGet Latest Price

    CERTIFICATE OF ANALYSIS
    ¿¿MICRONISED CARBON BLACK
    ¿¿
    CARBON
    82.54%
    HYDROGEN
    3. 28%
    NITROGEN
    2. 65%
    SULPHUR
    6. 69%
    pH 5%
    6. 48
    pH 10%
    6. 63
    ASH CONTENT
    1. 68%
    Fe by ICP
    0. 160%
    SULPHUR by ICP
    1. 578%
    NITROGEN SURFACE AREA
    24. 3 m2/gm
    ¿¿

    Minimum Order Quantity¿¿20 kg


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  • Minimum Order Quantity: 20 Kilogram
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    Micronised Dolomite

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    Approx. Rs 15.5 / KilogramGet Latest Price

    Micronised Dolomite
    Certificate Of Analysis
    Micronised Dolomite
    Particulars
    Results
    Appearance
    Very White Smooth Powder
    Calcium Carbonate
    54%
    Magnesium Carbonate
    45%
    Sio2
    2% Max.
    Passing On 500 Mesh
    1% Max.
    Bulk Density
    0. 85
    Whiteness
    96% Min.
    Water Solubles
    0. 80%
    Heavy Metals
    Traces

    Additional Information:

  • Minimum Order Quantity: 50 Kilogram
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    Sodium Hydroxide

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    Approx. Rs 78 / kgGet Latest Price

    Sodium Hydroxide

    Sodium hydroxide (NaOH) is an inorganic compound. It is a white solid and highly caustic metallic base and alkali salt of sodium which is available in pellets, flakes, granules, and as prepared solutions at a number of different concentrations. Sodium hydroxide forms an approximately 50% (by weight) saturated solution with water.

    Sodium hydroxide is soluble in water, ethanol, and methanol. This alkali is deliquescent and readily absorbs moisture and carbon dioxide in air.

    Sodium hydroxide is used in many industries, mostly as a strong chemical base in the manufacture of pulp and paper, textiles, drinking water, soaps, detergents and as a drain cleaner. It is also used in concrete in the construction industry.

    Additional Information:

  • Minimum Order Quantity: 5 kg
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    Marble Powder (Marblo XL)

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    Approx. Rs 21 / KilogramGet Latest Price

    MARBLE POWDER

    ( MARBLO - XL )

    CERTIFICATE OF ANALYSIS

         MARBLO XL ( MARBLE POWDER)

    PHYSICAL PROPERTIES: 

    PHYSICAL STATE

    FINE POWDER

    ODOUR

    ODOURLESS

    APPEARANCE

    FREE FLOWING (CLEAR PARTICLES PURE )

    COLOR

    NATURAL PURE WHITE

    PACK DENSITY

    1.100 g/ml

    Ph ( 5% SOLUTION )

    6. 0

    SPECIFIC GRAVITY

    2. 6% MAX.

    MOISTURE

    BELOW  0. 5%

    OIL OBSORPTION ML/100GM

    18. 20

    PARTICAL SIZE

    325 MESH

     CHEMICAL PROPERTIES: 

    Silica

    SiO2

    11.38%

    Alumina

    Al2O3

    0. 23%

    Ferric Oxide

    Fe2O3

    0. 09%

    Titanium Dioxide

    TiO2

    NIL

    Calcium Oxide

    CaO

    45.18%

    Calcium Carbonate

    CaCO3

    88.5%

    Magnesium Oxide

    MgO

    0. 20%

    MagnesiumCarbonate

    MgCO3

    0. 42%

    Sulphur

    SO3

    0. 008%

    Phosphorus

    P2O5

    0. 009%

    Loss on Ignition

     

    43 . 60%

    HEAVY METAL

     

    N.A

    LEAD

     

    N.A.

    ARSENIC

     

    N.A.

     

     


    Additional Information:

  • Minimum Order Quantity: 50 Kilogram
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    Sodium Silicate (Liquid)

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    Approx. Rs 32 / KilogramGet Latest Price

    • Sodium silicate ( liquid )
    • Certificate of analysis
    • Sodium silicate ( liquid )

     

    TECHNICAL SPECIICATION

    NEUTRAL GRADE

    ALKALINE GRADE

    APPEARANCE

    HAZY COLOURLESS

    VISCOUS TRANSLUCENT

    TOTAL ALKALNITY ( as Na2O) % by MASS, MIN

    9. 00 +/- 1. 00

    15. 00 +/- 1. 00

    SOLUBLE SILICATE as SiO2

    29

    33

    TOAL SOLUBLE SLICATE % BY MASS, MIN

    38. 00 +/- 1

    48

    RATIO OF TOTAL ALKALINITY ( as (Na2O ) TO TOTAL SOLUBLE SILICA (AS SiO2: ( Na2O: SiO2 )

    01:30.20

    01:02.20

    SPECIFIC GRAVITY

    40 +/- 1 Deg. Be

    50 +/- 1 Deg. be

     

     


    Additional Information:

  • Minimum Order Quantity: 50 Kilogram
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    Yellow Iron Oxide

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    Approx. Rs 28.00 / KilogramGet Latest Price

    Product Details:
    Minimum Order Quantity50 Kilogram
    BrandASTRRA
    Packaging Size50 kgd
    Packaging TypeHDPE BAGS

    Our organization is established as one of the leading manufacturers, suppliers, wholesalers and exporters of quality assured Iron Oxide Yellow.This powder is processed using high quality chemical compounds that our procuring agents obtain from trusted vendors of the market. Our offered powder is packed hygienically in air tight packaging to prevent from any impurity. Features: Longer shelf life Good dispersion High tinting strength
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    Aluminium Silicate Extra Light

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    Approx. Rs 82 / KilogramGet Latest Price

    We are a prominent manufacturer, supplier, wholesaler and exporter of Aluminium Silicate. All these products are processed using optimum-grade chemical compounds employing latest equipment. Besides, our logistics personnel ensure to timely deliver the offered range at customers' destination using easy modes of shipment.

    Features

    White in color

    Effective

    Moisture resistant


    Certificate Of Analysis

    AppearanceWhite PowderBrightness(ISO)82+/-0.5%Loss on ignition14%(Max)Coarse particle on 53

    Micron IS SIEVE (Max)0.05%(Max)Ph (of 20% aqueous solution)4.5 to 6.5Particles less than 2 micron68% w/w (Min)Bulk density0.8%+-0.1 gm/ccMoisture1%(Max)Melting point1735 Deg.CSpecific gravity (H2O=1)2.63

    Chemical analysis (w/w)%

    Silica45.17Ferric Oxide0.50(Max)Alumina37.59Titanium Dioxide0.5Calcium Oxide0.22Magnesium Oxide0.12Sodium Oxide0.31Potash0.07


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  • Minimum Order Quantity: 50 Kilogram
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    Calcium Chloride ( Anhydrous )

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    Approx. Rs 29 / KilogramGet Latest Price

    Calcium Chloride
    ( Anhydrous )
    For Concrete application

    Investigations have shown that a two per cent addition of calcium chloride has equal cure strength at 50F as plain concrete has at 70F. Regardless of the temperature or cement type, concrete mixes containing calcium chloride will always have a faster cure rate than plain concrete.

    The beneficial effects of calcium chloride will be even more pronounced at lower temperatures. The accelerated cure rate measured as final concrete set time can be reduced by two-thirds when two per cent calcium chloride is added - two hours compared to six hours for plain concrete.
    calcium chloride can accelerate cement hydration reducing its set time.

    That means:


    high initial strength
    reduced final set time
    reduced bleeding
    improved workability
    fast form work turnaround
    greater cost effectiveness
    beneficial when used with fly ash or Microsilica

    *Effect of Calcium Chloride on Portland Cements and Concretes.

    COLD WEATHER CONSTRUCTION

    Low temperatures slow concrete hydration. That is why an accelerator is needed to obtain high initial strength. Calcium Chloride accelerates hydration and gives concrete the strength and durability to meet specification requirements at lower temperatures.

    • Purity
    • Accurate composition
    • Longer shelf life
    • Aggregate Concrete
    • Concrete Admixture
    • Cement admixture

     

     


    Additional Information:

  • Minimum Order Quantity: 50 Kilogram
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    Biomass Silica Micronised As Cement Replacement Material In Concrete

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    Approx. Rs 21 / KilogramGet Latest Price

    Product Details:
    Minimum Order Quantity50 Kilogram
    BrandASTRRA

    BIOMASS SILICA ( MICRONISED ) 

    AS CEMENT REPLACEMENT MATERIAL IN CONCRETE 

    Micronised Biomass Silica (MBS) is an agricultural waste product which comprises of high content of silica. This study was conducted on the off-white amorphous biomass silica ash derived from the rice husk with pozzolanic index 69%. Various percentages of MBS ranging from 0% to 20% by mass have been used as cement replacement material. Compressive strength and water permeability of concrete with MBS incorporation were investigated. From the results obtained, 

    COA.

     Silica                               

    SiO2

    88.90%

    Alumina

    Al2O

    2.50%

    Ferric Oxide

    Fe2O3

    2.19%

    Calcium Oxide

    CaO

    0.22%

    Total Alkalies                  

    (Na2O+K20

    0.69%

    Loss on drying at 100 Deg.C

     

    4.01%

    Specific gravity               

     

    2.25%

     Bulk Density                    

     

    0.2 – 0.3 gm%

     Free Silica Sand               

     

    Max.3%

     

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    Light Weight Aggregate (Perlite - Grade - SF II) & Powder

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    Approx. Rs 68 / KilogramGet Latest Price

    LIGHT WEIGHT AGGREGATE ( Perlite - GRADE - SF II ) & Powder

    Construction Applications

    Perlite has a very outstanding insulating characteristics and light weight, it is widely used as a loose-fill insulation in masonry construction. In this application, free-flowing perlite loose-fill masonry insulation is poureMasonry Tools Perlited into the cavities of concrete block where it completely fills all cores, crevices, mortar areas and ear holes. In addition to providing thermal insulation, perlite enhances fire ratings, reduces noise transmission and it is rot, vermin and termite resistant. Perlite is also ideal for insulating low temperature and cryogenic vessels.

    When perlite is used as an aggregate in concrete, a lightweight, fire resistant, insulating concrete is produced that is ideal for roof decks and other applications. Perlite can also be used as an aggregate in Portland cement and gypsum plasters for exterior applications and. for the fire protection of beams and columns.

    Other construction applications include under-floor insulation, chimney linings, paint texturing, gypsum boards, ceiling tiles and roof insulation boards.

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  • Minimum Order Quantity: 50 Kilogram
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    Barmer Bentonite ( Sodium )

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    Approx. Rs 13.50 / KilogramGet Latest Price

    Product Details:
    Minimum Order Quantity100 Kilogram
    StatePowdered

    BARMER BENTONITE ( SODIUM )

    We offer and are the leading manufacturers of Bentonite Powder in Chennai, Tamilnadu, India. It is naturally formed electrostatic volcanic material. It has an electric charge and is widely used in cleaning applications because of its absorption properties. It is composed of montmorillonite and is used in adhesives, cement and ceramic bodies. Specification Bentonite Powder Chemical Analysis Formula Maximum Minimum Silica SiO2 40.00% 45.00% Magnesium Oxide MgO 06.00% 7.00% Aluminium Oxide Al2O3 08.00% 10.00% Ferric Oxide Fe2O3 08.00% 10.00% Titanium Oxide TiO2 ---- 01.50% Calcium Oxide CaO 08.00% 10.00% Loss on Ignition 20.00% 22.00% Physical Properties Results Swelling 5ccs in 24 Hours Gel Index 11.00% Water of Plasticity 86.95% pH Value 06.00% to 07.00%
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    Bentonite Powder ( Sodium )

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    Approx. Rs 13.5 / KilometerGet Latest Price

    Product Details:
    Minimum Order Quantity50 Kilometer
    Packaging Size50 kgs
    Grade StandardTechnical Grade
    Physical StatePowder
    StatePowdered
    Packaging TypeHDPE Bags

    We offer Bentonite Powder that is naturally formed electrostatic volcanic material. It has an electric charge and is widely used in cleaning applications because of its absorption properties. It is composed of montmorillonite and is used in adhesives, cement and ceramic bodies. Specification Bentonite Powder Chemical Analysis Formula Maximum Minimum Silica SiO2 40.00% 45.00% Magnesium Oxide MgO 06.00% 7.00% Aluminium Oxide Al2O3 08.00% 10.00% Ferric Oxide Fe2O3 08.00% 10.00% Titanium Oxide TiO2 ---- 01.50% Calcium Oxide CaO 08.00% 10.00% Loss on Ignition 20.00% 22.00% Physical Properties Results Swelling 5ccs in 24 Hours Gel Index 11.00% Water of Plasticity 86.95% pH Value 06.00% to 07.00%
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    Pumice Stone Powder

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    Approx. Rs 32 / KilogramGet Latest Price

    PUMICE STONE POWDER

    For Concrete application

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  • Minimum Order Quantity: 50 Kilogram
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    Micro Clay

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    Approx. Rs 15.5 / KilogramGet Latest Price

    Product Details:
    Minimum Order Quantity50 Kilogram
    StatePowdered

    MICRO CLAY

    For Concrete application

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    Alumina Cement

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    Approx. Rs 48 / KilogramGet Latest Price


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  • Minimum Order Quantity: 100 Kilogram
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    FERRIC OXIDE

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    Approx. Rs 38 / KilogramGet Latest Price


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  • Minimum Order Quantity: 100 Kilogram
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    Aluminum Oxide ( Brown ) - Grit - 80

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    Approx. Rs 72 / KilogramGet Latest Price

    CERTIFICATE OF ANALYSIS

     

                 ALUMINIUM OXIDE POWDER 80M – BROWN ( GRIT SIZE: 80M )

      

    MESH

    50

    70

    80

    100

    - 120

    %

    0

    15

    75

    94

    0.1


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  • Minimum Order Quantity: 50 Kilogram
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    Foundry Sand

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    Approx. Rs 20 / KilogramGet Latest Price

    FOUNDRY SAND

    Concrete is a mixture comprised of cement (10-15 percent), coarse and fine aggregates (60-75 percent) and water (15-20 percent) by volume.   Foundry sand can be used as a fine aggregate substitute in concrete.  Fine aggregates are generally 3/8 inch or smaller, while coarse aggregates are 3/8 to 2 inches in diameter. 

    Foundry sand meets two of the critical requirements for concrete aggregates:  it is uniformly graded, and is strong, hard, and durable.



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    Vermiculite

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    VERMICULITE POWDER

    Owing to our vast experience and knowledge of this domain, we have been able to manufacture, wholesale and export best quality Vermiculite Powder. This exfoliated vermiculite is commonly used in the agricultural, construction and horticultural sectors. It is processed by the experienced professionals adhering to the set industry standards.

    Features:

    • Accurate composition
    • Long shelf life
    • Provides strength to concrete

    Certificate Of Analysis:

     

     

     

     

    Size Grading

    0. 5 to 1.5 mm

    Color

    Golden Color

    Bulk density

    100 to 150 Kg / cubic metre

    Water Content

    Max 2% + 1%

    PH

    7 to 8

     


    Additional Information:

  • Minimum Order Quantity: 25 Kilogram
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    Calcium Hydroxide

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    Approx. Rs 21 / KilogramGet Latest Price

    Calcium Hydroxide

    Certificate of analysis:

    Lime as Ca (OH)2

    :

    90%

     

    Active CaO

    :

    68%

     

    Acid insolubles

    :

    1 %

    Max

    Iron & Alumina as Fe2O3 & Al2O3

    :

    Traces

     

    Magnesia as MgO

    :

    0.6%

    Max


     Physical Property :

     

    Mesh (BSS) 

    250

     

     



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  • Minimum Order Quantity: 50 Kilogram
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    Sodium Meta Silicate ( Sodium Silicate Powder )

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    Approx. Rs 38 / KilogramGet Latest Price

    SODIUM META SILICATE ( SODIUM SILICATE POWDER )

    With the help of our distinguished professionals, we have been able to manufacture, supply, wholesale and export¿¿Sodium Meta Silicate. The range offered by us is tested to be pure and cent percent effective. Available at very affordable prices, this chemical formulation finds numerous applications in various industries.

    Features

    Longer shelf life

    Effective

    Safe usage


    Certificate of analysis

    Total alkalinity (as Na2O ) % by mass, min21Ratio of total alkalinity (as Na2O) to total soluble silica (as SiO2) (Na2O ) SiO2)11 +- 0. 05Loss on evaporation % by mass, max59Matter insoluble in water % by mass, max0.5Free alkalinity (as Na2O ) % by mass, max0.8


    Minimum Order Quantity¿¿50 Kilogram


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  • Minimum Order Quantity: 50 Kilogram
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    Copper Slag

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    Approx. Rs 38 / KilogramGet Latest Price

    COPPER SLAG

    ( For Civil / Concrete / Cement application )

    Minimum Order Quantity 50 Kilogram


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    Aluminium Trihydrate ( A.T.H.)

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    Aluminium Trihydrate( A.T.H.)¿¿
    (Fire Retardant)
    ¿¿
    Typical Cemical Analysis
    ¿¿
    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


    Additional Information:

  • Minimum Order Quantity: 50 Kilogram
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    Sand - M72 ( Silica Sand )

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    Approx. Rs 13.5 / KilogramGet Latest Price

    Product Details:
    Minimum Order Quantity50 Kilogram
    BrandASTRRA

    Sand - M72

    Analysis Report

     

    sio2

    99. 5%

    al2o3

    0. 08%

    tio2

    0. 04%

    cao

    0. 01%

    mgo

    0. 01%

    l. O. I.

    0. 28%

    alkalies

            0. 29%

    fe2o3

            0. 04%

     

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    Micaceous Ferric Oxide ( Micaceous Iron Oxide ( Black )

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    Approx. Rs 38 / BagGet Latest Price

    Micaceous Ferric Oxide ( Micaceous Iron Oxide ( Black ) )

    From the metallic color palette of GOLDEN Heavy Body and Fluid Acrylic colors, Micaceous Iron Oxide is a warm, nearly black color that dries with a texture and sparkle similar to fine grit sandpaper. Great as a metallic color, it also makes an excellent surface for drawing with pencil, pastel and conté crayon.

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  • Minimum Order Quantity: 50 Bag
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    Red Oxide ( Natural )

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    Approx. Rs 28 / KilogramGet Latest Price

    Certificate of analysis

    Molar mass159.69 g/molAppearancered-brown solidOdorodorlessDensity5.242 g/cm3, solidMelting point1,566¿¿ DegreeC; 2,851¿¿ DegreeF; 1,839¿¿K (decomposes)


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    Iron Oxide Black

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    Approx. Rs 28 / KilogramGet Latest Price

    Certificate of analysis

    Molar mass231.533 g/molAppearancesolid black powderDensity5 g/cm3Melting point1538 DegreeC


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  • Minimum Order Quantity: 50 Kilogram
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    Copper Slag

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    Approx. Rs 38 / KilogramGet Latest Price

    Copper Slag
     

    COLOUR                                                       : BLACKISH GRAY, GLASSY

    GRAIN SHAPE                                              : MULTIFACETED

    HARDNESS                                                    : >5-7 MOH

    BULK DENSITY AT 25                                : 1.8-2.2 TON/M3

    PH                                                                   : 6.5

    CONDUCTIVITY AT 25                               : NIL

    WEIGHT LOSS ON IGNITON                     : 1.75-2.0 % AT 900 C

     

    MOISTURE CONTENT                                : <0.1 %


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    Foaming Agent

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    Approx. Rs 150 / KilogramGet Latest Price

    Foaming Agent 

    For Concrete application

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    Bentonite Sodium

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    Approx. Rs 13.5 / KilogramGet Latest Price

    Bentonite

    ( Calcium Based )


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