Hexahydrophthalic anhydride

CAS 85-42-7

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$37M

Top sourceChina 25%

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 291720 · basket

EPA reports by year

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

These shares come from HS customs code 291720, which covers 42 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 25%ChinaIT 21%ItalyJP 21%JapanDE 14%GermanyIN 9%India

Ukraine
South Africa
Malaysia
Netherlands
Mexico
United Kingdom
Switzerland
Latvia
Canada

EPA-registered manufacturers (2)

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

Dixie Chemical

Lindau Chemicals

Domestic parents -- activity not disclosed (2)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Milliken &

Polynt Composites Usa

EPA-registered importers (5)

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

Aceto Us

Huntsman

Polymer Additives

Wego Chemical Group

Westlake

Why It Matters

Sectors

WaterElectronicsMetals & MiningPlastics & RubberCore Chemicals

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 6 sectors as 6 functional roles.

•Monomers in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in All Other Basic Inorganic Chemical ManufacturingProcessing as a reactant
•Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Miscellaneous Manufacturing (100%)Processing as a reactant
•Hardener in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
•Chelating agent in Plastics Material and Resin Manufacturing (5%)Processing—incorporation into formulation, mixture, or reaction product
•pH regulating agent in Plastics Material and Resin Manufacturing (5%)Processing—incorporation into formulation, mixture, or reaction product
•Dispersing agent in Electrical Equipment, Appliance, and Component ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Intermediate in Utilities (100%)Processing—incorporation into article

Vendor Pricing

$0.01/gAaron Chemicals LLC

CountryHong Kong

Pack$7.00 / 500 g

Purity98%

Vendors19 available

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

18 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.02	500 g	98%
AA BLOCKS	United States	$0.03	500 g	95%
A2B Chem LLC	United States	$0.03	500 g	95%
Ambeed, Inc.	United States	$0.04	1 kg	95%
Fluorochem EU	Germany	$0.07	500 g	95%
Fluorochem UK	United Kingdom	$0.07	500 g	95%
ALFA AESAR	Germany	$0.11	500 g	97%
AK Scientific, Inc.	United States	$0.20	500 g	95%
Combi-Blocks, Inc.	United States	$0.25	1 kg	95%
Angene International Limited	United States	$0.38	500 g	95%
AstaTech (2 weeks)	United States	$0.99	100 g	95%
Accela ChemBio	United States	$50.00	1 g	98%
Labotest KG	Germany	$217.80	5000 mg	90%
Otava, Ltd.	Ukraine	$460.00	250 mg	95%
Otava, Ltd. (2 weeks)	Ukraine	$2724.00	50 mg	90%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
Vitas M Chemical Limited	Hong Kong	$3170.00	100 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	95%

Chemical Identity

CAS85-42-7

PubChem CID85689

DTXSIDDTXSID8026515

FormulaC8H10O3

Mol. Weight154.16 g/mol

SMILESC1CCC2C(C1)C(=O)OC2=O

Data Sources

EPA CompTox (DSSTox) · DTXSID8026515Retrieved 2026-04-06
PubChem · compound 85689Retrieved 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

Hexahydrophthalic anhydride (CAS 85-42-7) https://chemicalindependence.com/chemical/85-42-7/ EPA CompTox (DSSTox): DTXSID8026515. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8026515 PubChem: 85689. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/85689 EPA Chemical Data Reporting: 85-42-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 85-42-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291720 for CAS 85-42-7. Reporting year: 2024. https://usatrade.census.gov/