Kieselguhr

CAS 61790-53-2

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$10M

Top sourceCanada 60%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023.

Where It Comes From

Customs basis: HS 251200 · exact

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

Source Countries

Country of origin for US imports, from Census customs data (2024).

CA 60%CanadaMX 16%MexicoDE 7%GermanyAR 5%ArgentinaJP 4%Japan

Brazil
Australia
Morocco
Ireland
Belgium

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Imerys

Domestic parents -- activity not disclosed (2)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Chemical Research & Licensing

Chevron Phillips Chemical

EPA-registered importers (6)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Basf Se · DE Germany

Clariant International · CH Switzerland

Basf

Clariant

Haldor Topsoe

Show all 6

Johnson Matthey

Why It Matters

Sectors

FoodEnergyConstructionMetals & MiningConsumer ProductsCore Chemicals

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

Used in 5 sectors as 5 functional roles.

•Solids separation (precipitating) agent, not otherwise specified in Mining (except Oil and Gas) and support activities (100%)Processing—repackaging
•Adsorbent in Wholesale and Retail Trade (100%)Use—non-incorporative activities
•Filler in ConstructionUse—non-incorporative activities
•Dispersing agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Catalyst in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Catalyst in All Other Basic Inorganic Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS61790-53-2

PubChem CIDNot recorded

DTXSIDDTXSID7049768

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID7049768Retrieved 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

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Brief citations

Kieselguhr (CAS 61790-53-2) https://chemicalindependence.com/chemical/61790-53-2/ EPA CompTox (DSSTox): DTXSID7049768. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7049768 EPA Chemical Data Reporting: 61790-53-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 61790-53-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 251200 for CAS 61790-53-2. Reporting year: 2024. https://usatrade.census.gov/