Calcium metasilicate
CAS 10101-39-0
U.S. production volumes are classified as confidential business information.
At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.
Why supply is unknownProduction is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.
Where It Comes From
Customs basis: HS 283990, 320649 · basket
- 2023
- US production Confidential · Imports Confidential
- 2019
- US production Confidential · Imports Confidential
These shares come from HS customs code 283990, 320649, which covers 64 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Colombia
- Taiwan
- Portugal
- Brazil
- Romania
- Egypt
- Israel
- Turkey
- Slovakia
- Malaysia
- Ireland
- Switzerland
- Finland
- Denmark
- Poland
- South Africa
- United Arab Emirates
- Czech Republic
- Cyprus
- Greece
- Moldova
- Hong Kong
- Australia
- Slovenia
- Singapore
- New Zealand
- Indonesia
- Hungary
- Peru
- Pakistan
- Honduras
- Tunisia
Why It Matters
Industrial Uses
- •pH regulating agent in Textiles, apparel, and leather manufacturing (100%)Processing as a reactant
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
11 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Angene Chemical | China → Hong Kong | $0.03 | 500 g | 87% |
| A2B Chem LLC (2 weeks) | United States | $0.09 | 10 kg | — |
| AA BLOCKS (2 weeks) | United States | $0.09 | 10 kg | — |
| A2B Chem LLC | United States | $0.12 | 250 g | — |
| AA BLOCKS | United States | $0.15 | 250 g | — |
| AK Scientific, Inc. | United States | $0.29 | 500 g | — |
| Combi-Blocks, Inc. | United States | $0.30 | 500 g | 95% |
| Angene International Limited | United States | $0.52 | 500 g | — |
| Sigma-Aldrich (Rush Stock) | Germany | $2.15 | 250 g | 99% |
| Sigma-Aldrich | Germany | $2.15 | 250 g | 99% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 87% |
Chemical Identity
Data Sources
- EPA CompTox (DSSTox) · DTXSID90892431Retrieved 2026-04-06
- PubChem · compound 26370Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Calcium metasilicate (CAS 10101-39-0) https://chemicalindependence.com/chemical/10101-39-0/ EPA CompTox (DSSTox): DTXSID90892431. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID90892431 PubChem: 26370. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/26370 EPA Chemical Data Reporting: 10101-39-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 10101-39-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283990,320649 for CAS 10101-39-0. Reporting year: 2024. https://usatrade.census.gov/