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2-Propynoic acid

CAS 471-25-0

Molecular structure of 471-25-0
US productionNot reported
Import value, 2024$117M
Top sourceChina 50%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

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

Where It Comes From

Customs basis: HS 291619 · basket

These shares come from HS customs code 291619, which covers 169 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 50%ChinaDE 21%GermanyTW 12%TaiwanIN 7%IndiaGB 3%United Kingdom

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Vendor Pricing

$2.12/gManchester Organics
CountryUnited Kingdom
Pack$211.51 / 100 g
Purity96%
Vendors9 available

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

8 more vendors
VendorCountry$/gPackPurity
Sigma-Aldrich (Rush Stock)Germany$3.46100 g95%
Sigma-AldrichGermany$3.46100 g95%
Key Organics Ltd.United Kingdom$4.0425 g95%
ALFA AESARGermany$5.46100 g98%
A2B Chem LLCUnited States$5.8825 g95%
AA BLOCKSUnited States$6.0825 g95%
AstaTech, IncUnited States$7.405 g90%
InterbioscreenHong Kong$34.0010 g95%

Chemical Identity

CAS471-25-0
PubChem CIDNot recorded
DTXSIDDTXSID6060050
FormulaC3H2O2
Mol. Weight70.047 g/mol
SMILESOC(=O)C#C

Data Sources

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Brief citations

2-Propynoic acid (CAS 471-25-0) https://chemicalindependence.com/chemical/471-25-0/ EPA TSCA Inventory: CAS 471-25-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 291619 for CAS 471-25-0. Reporting year: 2024. https://usatrade.census.gov/