Methyl (methylthio)acetate

CAS 16630-66-3

US productionNot reported

Import value, 2024$760M

Top sourceChina 33%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

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 293090 · basket

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

Country of origin for US imports, from Census customs data (2024).

CN 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India

Israel
Croatia
Ukraine
Slovakia
United Arab Emirates
Ireland
Poland
Lithuania
Brazil
Singapore
Australia
Armenia
Hong Kong
Vietnam
Czech Republic
Hungary
Greece
Russia

Why It Matters

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

Chemical Identity

CAS16630-66-3

PubChem CIDNot recorded

DTXSIDDTXSID20168090

FormulaC4H8O2S

Mol. Weight120.17 g/mol

SMILESCOC(=O)CSC

Data Sources

EPA CompTox (DSSTox) · DTXSID20168090Retrieved 2026-04-29
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Methyl (methylthio)acetate (CAS 16630-66-3) https://chemicalindependence.com/chemical/16630-66-3/ EPA CompTox (DSSTox): 16630-66-3. Retrieved 2026-04-29. https://comptox.epa.gov/dashboard/chemical/details/DTXSID20168090 US Census international trade: HS 293090 for CAS 16630-66-3. Reporting year: 2024. https://usatrade.census.gov/