Cresyl diphenyl phosphate

CAS 26444-49-5

EPA’s 2023 records show zero U.S. production of this chemical.

US productionZero

Import value, 2024$123M

Import volumeCBI

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

Top sourceChina 66%

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. 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 291990 · basket

EPA reports by year

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

These shares come from HS customs code 291990, which covers 77 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).

CN 66%ChinaDE 18%GermanyJP 5%JapanIN 3%IndiaCH 3%Switzerland

Poland
Canada
Taiwan
Belgium
Netherlands
Malaysia
Austria
Spain
Ireland
Mexico
South Korea
Turkey
Czech Republic
Hong Kong

EPA-registered importers (2)

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

Huntsman

Lanxess

Why It Matters

Sectors

Plastics & RubberTextiles

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 2 sectors as 1 functional role.

•Flame retardant in Textiles, apparel, and leather manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Flame retardant in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$40.00/gAstaTech (2 weeks)

CountryUnited States

Pack$40.00 / 1 g

Purity95%

Vendors5 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

4 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$491.00	1 g	95%
Angene Chemical	China → Hong Kong	$495.00	1 g	95%
AA BLOCKS (2 weeks)	United States	$607.00	1 g	95%
A2B Chem LLC (2 weeks)	United States	$705.00	1 g	95%

Chemical Identity

CAS26444-49-5

PubChem CID520263

DTXSIDDTXSID3024861

FormulaC19H17O4P

Mol. Weight340.3 g/mol

SMILESCC1=CC=CC=C1OP(=O)(OC2=CC=CC=C2)OC3=CC=CC=C3

Data Sources

EPA CompTox (DSSTox) · DTXSID3024861Retrieved 2026-04-06
PubChem · compound 520263Retrieved 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

Cresyl diphenyl phosphate (CAS 26444-49-5) https://chemicalindependence.com/chemical/26444-49-5/ EPA CompTox (DSSTox): DTXSID3024861. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3024861 PubChem: 520263. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/520263 EPA Chemical Data Reporting: 26444-49-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 26444-49-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291990 for CAS 26444-49-5. Reporting year: 2024. https://usatrade.census.gov/