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Hex-3-yne-2,5-diol

CAS 3031-66-1

Used in 3 industrial sectors tracked by the EPA.

Molecular structure of 3031-66-1
US production10.2K lb
Import value, 2024$82M
Import volumeCBI
Top sourceGermany 18%

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. 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 290539 · basket

EPA reports by year
2023
US production 10.2K lb · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 290539, which covers 48 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
DE 18%GermanyKR 16%South KoreaBR 11%BrazilTW 8%TaiwanMX 7%Mexico
EPA-registered manufacturers (1)
Macdermid
Domestic parents -- activity not disclosed (1)
Atotech Usa
EPA-registered importers (3)
Basf Se · DE Germany
Atotech Manufacturing
Basf

Why It Matters

Sectors
Metals & MiningPaints & CoatingsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 3 sectors as 4 functional roles.

  • •Plating agent in Paint and Coating Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Chelating agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Etching agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Plating agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Brightener in Primary Metal ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.14/gAaron Chemicals LLC
CountryHong Kong
Pack$72.00 / 500 g
Purity80%
Vendors7 available

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

6 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.16500 g80%
Angene International LimitedUnited States$9.93100 g97%
Combi-Blocks, Inc.United States$11.0010 g95%
A2B Chem LLCUnited States$51.805 g95%
AA BLOCKSUnited States$54.805 g95%
AngeneChina → Hong Kong$4266.6730 mg80%

Chemical Identity

CAS3031-66-1
PubChem CID18198
DTXSIDDTXSID3044910
FormulaC6H10O2
Mol. Weight114.14 g/mol
SMILESCC(C#CC(C)O)O

Data Sources

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Brief citations

Hex-3-yne-2,5-diol (CAS 3031-66-1) https://chemicalindependence.com/chemical/3031-66-1/ EPA CompTox (DSSTox): DTXSID3044910. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3044910 PubChem: 18198. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/18198 EPA Chemical Data Reporting: 3031-66-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3031-66-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290539 for CAS 3031-66-1. Reporting year: 2024. https://usatrade.census.gov/