Mineral Fillers & Pigments Available — Bulk Only

Calcium Silicate

CAS 1344-95-2 · Formula CaH6O8Si2 · MW 230.29 g/mol

A high-absorbency mineral additive that keeps powders free-flowing and reinforces compounded materials. It is used as an anti-caking and free-flow agent in powders, as an absorbent for liquids and gases, as a reinforcing filler in elastomers and plastics, and as a constituent of lime glass, Portland cement, and refractory binders.

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HS Code
2839.90
At a Glance
Material Family
Mineral Fillers & Pigments
Record Type
Pure compound
Primary Role
Thickening / Rheology · Color / Pigmentation
Functional Roles
Thickening / Rheology Color / Pigmentation Viscosity Modification Moisture Control
INCI Name
CALCIUM SILICATE
CosIng Functions
ABSORBENTBULKINGOPACIFYINGPEARLESCENTVISCOSITY CONTROLLING
Industries Served
Beauty & Personal Care Food & Beverage Oil & Gas Plastics & Polymers
Applications & Use Cases
  • ▸ Anti-caking agent: Free-flow agent in powders and dry mixes.
  • ▸ Absorbent: Carrier/absorbent for liquids, gases, and vapors.
  • ▸ Reinforcing filler: Filler in elastomers and plastics.
  • ▸ Refractory/cement: Constituent of lime glass, Portland cement, and refractory binders.
Physical Properties
Melting Point
1540 °C
Density
2.92 g/cu cm
Solubility
Insoluble in water
Vapor Pressure
0 mmHg (approx)
pH
pH of aqueous slurry: 8.0-10.0
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2839 . 90
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.39
Internationally harmonized (WCO HS)
Subheading 2839.90
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
1344-95-2
Molecular Formula
CaH6O8Si2
Molecular Weight
230.29 g/mol
IUPAC Name
calcium bis(trihydroxy(oxido)silane)
INCI Name
CALCIUM SILICATE
PubChem CID
73415800
InChI Key
LECAAGVQUHQAJK-UHFFFAOYSA-N
Synonyms & Trade Names
Calcarea silicata Huberderm 1000 INS NO.552 INS-552 E-552 Head Cold Calcium salt of silicic acid Calcium hydrosilicate Calcium monosilicate Calcium Orthosilicate Calcium Silicate Calcium silicate, synthetic nonfibrous Calflo E Calsil CS Lafarge
Full Description

Calcium Silicate (CAS 1344-95-2) is an inorganic calcium salt of silicic acid. It is used as an anti-caking and free-flow agent in powders, as an absorbent for liquids and gases, as a reinforcing filler in elastomers and plastics, and as a constituent of lime glass, Portland cement, and refractory binders.

Frequently Asked Questions

What is the use of calcium silicate?

Calcium silicate is used as an anti-caking and free-flow agent in powders and dry mixes, as an absorbent/carrier for liquids and gases, as a reinforcing filler in elastomers and plastics, and as a constituent of lime glass, Portland cement, and refractory binders. RawSource supplies it in bulk.

What is another name for calcium silicate?

Calcium silicate is the calcium salt of silicic acid (CAS 1344-95-2). It is also encountered in product names referencing calcium silicate board and calcium silicate insulation, which are formed materials made from it.

What is the chemical formula of calcium silicate?

The supplied material corresponds to formula CaH6O8Si2 (an inorganic calcium salt of silicic acid), CAS 1344-95-2, HS code 2839.90. Stoichiometry varies by grade and source.

What grades and packaging is bulk calcium silicate available in?

Calcium silicate is supplied as a powder for anti-caking, absorbent, and filler use; available packaging and grade specifics are confirmed at quote. RawSource provides a CoA and SDS with each lot.

What is the cost of bulk calcium silicate?

Pricing depends on grade, particle size, packaging, and volume. RawSource quotes industrial quantities; submit a bulk RFQ with your application and target volume for current pricing.

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Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.

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