Diphosphoric acid, dibutyl ester

CAS 28901-77-1

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 volumeZero

Top sourceNo public record

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

EPA reports by year

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

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.

Lanxess

Why It Matters

Sectors

Plastics & Rubber

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

•Flame retardant in Plastics Product Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS28901-77-1

PubChem CID120090

DTXSIDDTXSID20884804

FormulaC8H20O7P2

Mol. Weight290.19 g/mol

SMILESCCCCOP(=O)(O)OP(=O)(O)OCCCC

Data Sources

EPA CompTox (DSSTox) · DTXSID20884804Retrieved 2026-04-06
PubChem · compound 120090Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

Diphosphoric acid, dibutyl ester (CAS 28901-77-1) https://chemicalindependence.com/chemical/28901-77-1/ EPA CompTox (DSSTox): DTXSID20884804. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID20884804 PubChem: 120090. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/120090 EPA Chemical Data Reporting: 28901-77-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 28901-77-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting