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tert-Butylphenyl diphenyl phosphate

CAS 56803-37-3

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

Molecular structure of 56803-37-3
US productionCBI
Import value, 2024$123M
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. 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 291990 · basket

EPA reports by year
2023
US production Confidential · 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
CN 66%ChinaDE 18%GermanyJP 5%JapanIN 3%IndiaCH 3%Switzerland
Domestic parents -- activity not disclosed (1)
Icl Specialty Products North America
EPA-registered importers (4)
Akzo Nobel Coatings
Lanxess
Pennzoil-Quaker State
The Sherwin Williams

Why It Matters

Sectors
EnergyWaterConstructionMetals & MiningPlastics & RubberPaints & Coatings
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 6 sectors as 4 functional roles.

  • •Lubricating agent in Petroleum Lubricating Oil and Grease Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Filler in Utilities (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Hydraulic fluids in Utilities (100%)Use—non-incorporative activities
  • •Flame retardant in Adhesive Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Flame retardant in Utilities (100%)Use—non-incorporative activities
  • •Flame retardant in Plastics Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Flame retardant in Plastics Material and Resin Manufacturing (40%)Processing—incorporation into formulation, mixture, or reaction product
  • •Flame retardant in Paint and Coating Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.16/gAaron Chemicals LLC
CountryHong Kong
Pack$80.00 / 500 g
Purity8.1%
Vendors7 available

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

6 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.17500 g8.1%
AK Scientific, Inc.United States$69.005 g40%
A2B Chem LLCUnited States$74.205 g40%
AA BLOCKSUnited States$76.805 g40%
Angene International LimitedUnited States$113.005 g40%
AngeneChina → Hong Kong$4266.6730 mg8.1%

Chemical Identity

CAS56803-37-3
PubChem CID158333
DTXSIDDTXSID6024701
FormulaC22H23O4P
Mol. Weight382.4 g/mol
SMILESCC(C)(C)C1=CC=CC=C1OP(=O)(OC2=CC=CC=C2)OC3=CC=CC=C3

Data Sources

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Brief citations

tert-Butylphenyl diphenyl phosphate (CAS 56803-37-3) https://chemicalindependence.com/chemical/56803-37-3/ EPA CompTox (DSSTox): DTXSID6024701. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6024701 PubChem: 158333. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/158333 EPA Chemical Data Reporting: 56803-37-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 56803-37-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291990 for CAS 56803-37-3. Reporting year: 2024. https://usatrade.census.gov/