(Phenylphosphoryl)bis[(2,4,6-trimethylphenyl)methanone]

CAS 162881-26-7

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

US productionZero

Import value, 2024$598M

Import volumeCBI

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

Top sourceChina 89%

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 293149 · basket

EPA reports by year

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

These shares come from HS customs code 293149, which covers 114 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 89%ChinaIN 4%IndiaCA 3%CanadaDE 2%GermanyAR 1%Argentina

United Kingdom
Italy
Mexico
Japan
Switzerland
Hong Kong
Ukraine
Finland
Sweden
Spain
Poland
Slovakia
Netherlands
Singapore
Taiwan
South Korea
Czech Republic

EPA-registered importers (4)

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

Rahn Ag · CH Switzerland

Aalborz Chemical

Igm Resins Charlotte

Rahn Usa

Why It Matters

Sectors

ConstructionPlastics & RubberPaints & CoatingsPaper & Printing

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 4 sectors as 2 functional roles.

•Photosensitive agent in Paint and Coating Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
•Photosensitive agent in Printing Ink Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
•Photosensitive agent in Adhesive Manufacturing (40%)Processing—incorporation into formulation, mixture, or reaction product
•Tanning agents not otherwise specified in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS162881-26-7

PubChem CID164512

DTXSIDDTXSID8044597

FormulaC26H27O3P

Mol. Weight418.5 g/mol

SMILESCC1=CC(=C(C(=C1)C)C(=O)P(=O)(C2=CC=CC=C2)C(=O)C3=C(C=C(C=C3C)C)C)C

Data Sources

EPA CompTox (DSSTox) · DTXSID8044597Retrieved 2026-04-06
PubChem · compound 164512Retrieved 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

(Phenylphosphoryl)bis[(2,4,6-trimethylphenyl)methanone] (CAS 162881-26-7) https://chemicalindependence.com/chemical/162881-26-7/ EPA CompTox (DSSTox): DTXSID8044597. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8044597 PubChem: 164512. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/164512 EPA Chemical Data Reporting: 162881-26-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 162881-26-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293149 for CAS 162881-26-7. Reporting year: 2024. https://usatrade.census.gov/