1,4-Dioxane-2,5-dione

CAS 502-97-6

Used in 1 industrial sector tracked by the EPA.

US production725.0K lb

Import volumeZero

Import dependency0%

Top sourceNo public record

Production is reported production, not a complete census of factories. Production reporting year: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293220 · basket

EPA reports by year

2023: US production Not published · Imports Not published
2019: US production 725.0K lb · Imports Zero

HS customs code 293220 covers 151 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 (2)

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

Kureha · JP Japan

Kureha America

Why It Matters

Sectors

Plastics & Rubber

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

•Monomers in Plastics Material and Resin Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.30/gAaron Chemicals LLC

CountryHong Kong

Pack$148.00 / 500 g

Purity97%

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	$0.30	500 g	97%
A2B Chem LLC	United States	$0.52	1 kg	97%
AA BLOCKS	United States	$0.63	1 kg	97%
Fluorochem EU	Germany	$0.70	100 g	97%
Chemscene	United States	$0.74	1 kg	—
Combi-Blocks, Inc.	United States	$0.78	500 g	98%
BLD Pharmatech Co., Limited	United States	$0.89	500 g	97%
BLD Pharmatech GmbH	Germany	$0.89	500 g	97%
BLD Pharmatech Ltd.	China	$0.89	500 g	97%
Ambeed, Inc.	United States	$0.89	500 g	97%
AK Scientific Specialized	United States	$1.20	100 g	95%
AK Scientific, Inc.	United States	$1.65	100 g	98%
Angene International Limited	United States	$2.20	100 g	95%
AstaTech, Inc	United States	$4.86	100 g	95%
Maybridge, Ltd.	United Kingdom	$5.44	50 g	97%
Sigma-Aldrich (Rush Stock)	Germany	$11.17	25 g	99%
Sigma-Aldrich	Germany	$11.17	25 g	99%
Angene	China → Hong Kong	$4266.67	30 mg	97%

Chemical Identity

CAS502-97-6

PubChem CID65432

DTXSIDDTXSID8060115

FormulaC4H4O4

Mol. Weight116.07 g/mol

SMILESC1C(=O)OCC(=O)O1

Data Sources

EPA CompTox (DSSTox) · DTXSID8060115Retrieved 2026-04-06
PubChem · compound 65432Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

1,4-Dioxane-2,5-dione (CAS 502-97-6) https://chemicalindependence.com/chemical/502-97-6/ EPA CompTox (DSSTox): DTXSID8060115. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8060115 PubChem: 65432. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/65432 EPA Chemical Data Reporting: 502-97-6. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 502-97-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting