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Metam-sodium

CAS 137-42-8

Molecular structure of 137-42-8
1 Na⁺
US productionNot reported
Import value, 2024$25M
Top sourceChina 40%

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

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 293020 · basket

These shares come from HS customs code 293020, which covers 37 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 40%ChinaHU 16%HungaryJP 15%JapanIN 15%IndiaIT 6%Italy

Why It Matters

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

Chemical Identity

CAS137-42-8
PubChem CIDNot recorded
DTXSIDDTXSID2029167
FormulaC2H4NNaS2
Mol. Weight129.17 g/mol
SMILES[Na+].CNC([S-])=S

Data Sources

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Brief citations

Metam-sodium (CAS 137-42-8) https://chemicalindependence.com/chemical/137-42-8/ EPA CompTox (DSSTox): 137-42-8. Retrieved 2026-04-29. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2029167 US Census international trade: HS 293020 for CAS 137-42-8. Reporting year: 2024. https://usatrade.census.gov/