Flag of the United StatesAmerican Chemical Independence

Sodium silicate (Na6Si2O7)

CAS 15593-82-5

Silicic acid (H6Si2O7), sodium salt (1:6)

Molecular structure of 15593-82-5
6 Na⁺
US productionNot reported
Import value, 2024$37M
Top sourceBrazil 52%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 283919 · narrow

These shares come from HS customs code 283919, which covers 4 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
BR 52%BrazilCA 28%CanadaPL 5%PolandIN 4%IndiaNL 3%Netherlands

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS15593-82-5
PubChem CIDNot recorded
DTXSIDDTXSID00935328
FormulaNa6O7Si2
Mol. Weight306.102 g/mol
SMILES[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-][Si]([O-])([O-])O[Si]([O-])([O-])[O-]

Data Sources

← Back to Dashboard

Brief citations

Sodium silicate (Na6Si2O7) (CAS 15593-82-5) https://chemicalindependence.com/chemical/15593-82-5/ EPA TSCA Inventory: CAS 15593-82-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 283919 for CAS 15593-82-5. Reporting year: 2024. https://usatrade.census.gov/