Methylhexahydrophthalic anhydride

CAS 25550-51-0

Used in 1 industrial sector tracked by the EPA.

US production6.8M lb

Import volumeZero

Import dependency0%

Top sourceNo public record

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 291720 · basket

EPA reports by year

2023: US production 6.8M lb · Imports Zero
2019: US production Confidential · Imports Confidential

HS customs code 291720 covers 42 tracked chemicals in total. US Census does not break out this chemical's share, so the country-of-origin mix is not available. EPA CDR reports import dependency at the chemical level separately, shown above.

EPA-registered manufacturers (1)

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

Dixie Chemical

Why It Matters

Sectors

Core 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

•Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.02/gAaron Chemicals LLC

CountryHong Kong

Pack$12.00 / 500 g

Purity98%

Vendors7 available

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

6 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.03	500 g	98%
Fluorochem UK	United Kingdom	$0.04	1 kg	95%
A2B Chem LLC	United States	$0.04	500 g	80%
AA BLOCKS	United States	$0.05	500 g	80%
Combi-Blocks, Inc.	United States	$0.64	500 g	97%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS25550-51-0

PubChem CID3016472

DTXSIDDTXSID1029330

FormulaC9H12O3

Mol. Weight168.19 g/mol

SMILESCC12CCCCC1C(=O)OC2=O

Data Sources

EPA CompTox (DSSTox) · DTXSID1029330Retrieved 2026-04-06
PubChem · compound 3016472Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

Methylhexahydrophthalic anhydride (CAS 25550-51-0) https://chemicalindependence.com/chemical/25550-51-0/ EPA CompTox (DSSTox): DTXSID1029330. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1029330 PubChem: 3016472. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/3016472 EPA Chemical Data Reporting: 25550-51-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 25550-51-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting