Molekula
Calcium polysilicate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Calcium polysilicate is a synthetic, amorphous silicate compound used primarily as a food additive (E552) for its anticaking and anti-clumping properties in powdered foods like salt, spices, and baking mixes. It is also employed in pharmaceuticals, ceramics, and as a soil conditioner. This white, free-flowing powder has a CAS number of 1344-95-2, a molecular formula of CaH6O8Si2, and a molecular weight of 230.29 g/mol. It is stable at ambient storage conditions but requires careful handling, as indicated by its "Warning" signal word. Molekula supplies calcium polysilicate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Calcium Oxide (CaO) | 40.0 - 45.0 % |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White, monoclinic crystals |
| Melting Point | 1540 °C |
| Density | 2.92 g/cm³ |
| Water Solubility | Insoluble in water |
| Vapour Pressure | 0 mmHg (approx) |
Source: PubChem CID 73415800 (HSDB, The National Institute for Occupational Safety and Health (NIOSH))
Identification
| Property | Value |
|---|---|
| SKU | 89993246 |
| CAS Number | 1344-95-2 |
| IUPAC Name | calcium bis(trihydroxy(oxido)silane) |
| Molecular Formula | CaH6O8Si2 |
| Molecular Weight | 230.29 |
| Exact Mass | 229.9227 |
| SMILES | O[Si](O)(O)[O-].O[Si](O)(O)[O-].[Ca+2] |
| InChIKey | LECAAGVQUHQAJK-UHFFFAOYSA-N |
| InChI | InChI=1S/Ca.2H3O4Si/c;2*1-5(2,3)4/h;2*1-3H/q+2;2*-1 |
| PubChem CID | 73415800 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 28399050 |
| Tariff Code | 2839900020 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H373 May cause damage to organs through prolonged or repeated exposure
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Calcarea silicata
- Calcium hydrosilicate
- Calcium monosilicate
- Calcium Orthosilicate
- Calcium salt of silicic acid
- Calcium Silicate
- Calcium silicate, synthetic nonfibrous
- Head Cold
- Huberderm 1000
- INS NO.552
Frequently asked questions
What is calcium polysilicate used for?
Calcium polysilicate is commonly used as a desiccant in packaging, as a soil conditioner in agriculture, and in the production of lightweight aggregates and insulating materials.
What is the chemical formula and molecular weight of calcium polysilicate?
The chemical formula is CaH₆O₈Si₂, and the molecular weight is 230.29 g/mol.
What safety classification does calcium polysilicate have?
The product carries a Signal Word: Warning, indicating it poses moderate hazards under normal use conditions.
How should calcium polysilicate be stored?
Store in a cool, dry place at ambient temperature, away from moisture and incompatible substances.
Does Molekula supply calcium polysilicate in bulk quantities?
Yes, we offer calcium polysilicate in bulk, with flexible packaging options (bags, drums, or custom solutions) based on order volume.
What documentation is provided with a calcium polysilicate order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS/SDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.