Phosphorothioic acid, O,O,O-triphenyl ester

CAS 597-82-0

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$15M

Top sourceMexico 45%

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 292019 · basket

EPA reports by year

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

These shares come from HS customs code 292019, which covers 12 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).

MX 45%MexicoCN 31%ChinaDE 15%GermanyBE 5%BelgiumIN 2%India

Japan
South Korea

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.

Basf Se · DE Germany

Basf

Why It Matters

Sectors

Energy

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

•Lubricating agent in Petroleum Lubricating Oil and Grease Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.06/gAaron Chemicals LLC

CountryHong Kong

Pack$29.00 / 500 g

Purity95%

Vendors15 available

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

14 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.06	500 g	98%
A2B Chem LLC	United States	$0.16	500 g	99%
BLD Pharmatech Ltd.	China	$0.18	500 g	95%
Ambeed, Inc.	United States	$0.19	500 g	95%
AA BLOCKS	United States	$0.20	500 g	99%
BLD Pharmatech GmbH	Germany	$0.25	100 g	95%
Combi-Blocks, Inc.	United States	$0.25	1 kg	95%
BLD Pharmatech Co., Limited	United States	$0.30	100 g	95%
Synthonix	United States	$0.40	100 g	97%
AstaTech, Inc	United States	$5.40	25 g	95%
Angene International Limited	United States	$11.12	25 g	95%
AK Scientific, Inc.	United States	$11.20	5 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	98%
ChemBridge Corporation	Kazakhstan	$18000.00	5 mg	90%

Chemical Identity

CAS597-82-0

PubChem CID69011

DTXSIDDTXSID4029191

FormulaC18H15O3PS

Mol. Weight342.3 g/mol

SMILESC1=CC=C(C=C1)OP(=S)(OC2=CC=CC=C2)OC3=CC=CC=C3

Data Sources

EPA CompTox (DSSTox) · DTXSID4029191Retrieved 2026-04-06
PubChem · compound 69011Retrieved 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

Phosphorothioic acid, O,O,O-triphenyl ester (CAS 597-82-0) https://chemicalindependence.com/chemical/597-82-0/ EPA CompTox (DSSTox): DTXSID4029191. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4029191 PubChem: 69011. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/69011 EPA Chemical Data Reporting: 597-82-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 597-82-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292019 for CAS 597-82-0. Reporting year: 2024. https://usatrade.census.gov/