3-Mercaptopropanoic acid

CAS 107-96-0

Used in 2 industrial sectors tracked by the EPA.

Molecular structure of 107-96-0
US production1.3M lb
Import value, 2024$760M
Import volumeCBI
Top sourceChina 33%

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 293090 · basket

EPA reports by year
2023
US production 1.3M lb · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 293090, which covers 418 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India
EPA-registered manufacturers (1)
Evans Chemetics Lp Dba Bruno Bock
EPA-registered importers (2)
Kowa · JP Japan
Kowa Holdings America

Why It Matters

Sectors
Plastics & RubberCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • •Chain transfer agent in Plastics Material and Resin Manufacturing (100%)Processing as a reactant
  • •Plasticizer in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.02/gAaron Chemicals LLC
CountryHong Kong
Pack$12.00 / 500 g
PurityNot recorded
Vendors19 available

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

Chemical Identity

CAS107-96-0
PubChem CID6514
DTXSIDDTXSID8026775
FormulaC3H6O2S
Mol. Weight106.15 g/mol
SMILESC(CS)C(=O)O

Data Sources

Brief citations

3-Mercaptopropanoic acid (CAS 107-96-0) https://chemicalindependence.com/chemical/107-96-0/ EPA CompTox (DSSTox): DTXSID8026775. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8026775 PubChem: 6514. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6514 EPA Chemical Data Reporting: 107-96-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 107-96-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293090 for CAS 107-96-0. Reporting year: 2024. https://usatrade.census.gov/