Boron potassium oxide (B4K2O7)

CAS 1332-77-0

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$16M

Top sourceItaly 37%

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. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 284020 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports 252.6K lb

These shares come from HS customs code 284020, which covers 16 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

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

IT 37%ItalyIN 19%IndiaCN 16%ChinaTR 12%TurkeyPE 5%Peru

South Korea
Brazil
Mexico
United Kingdom
Finland
Japan
Netherlands

EPA-registered manufacturers (2)

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

Basf

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.

Rio Tinto America

Seatex

Why It Matters

Sectors

Metals & MiningCore 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 3 sectors as 3 functional roles.

•Intermediate in Miscellaneous Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Lubricating agent in Fabricated Metal Product ManufacturingUse—non-incorporative activities
•Intermediate in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Cleaning agent in Fabricated Metal Product ManufacturingUse—non-incorporative activities

Chemical Identity

CAS1332-77-0

PubChem CID9816075

DTXSIDDTXSID2052782

FormulaB4K2O7

Mol. Weight233.4 g/mol

SMILESB1(OB2OB(OB(O1)O2)[O-])[O-].[K+].[K+]

Data Sources

EPA CompTox (DSSTox) · DTXSID2052782Retrieved 2026-04-06
PubChem · compound 9816075Retrieved 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

Boron potassium oxide (B4K2O7) (CAS 1332-77-0) https://chemicalindependence.com/chemical/1332-77-0/ EPA CompTox (DSSTox): DTXSID2052782. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2052782 PubChem: 9816075. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/9816075 EPA Chemical Data Reporting: 1332-77-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1332-77-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 284020 for CAS 1332-77-0. Reporting year: 2024. https://usatrade.census.gov/