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2-Benzothiazolesulfonic acid, sodium salt (1:1)

CAS 21465-51-0

Molecular structure of 21465-51-0
1 Na⁺
US productionNot reported
Import value, 2024$104M
Top sourceChina 56%

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 293420 · basket

These shares come from HS customs code 293420, which covers 76 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 56%ChinaBE 33%BelgiumIN 4%IndiaIT 3%ItalyES 2%Spain

Why It Matters

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

Chemical Identity

CAS21465-51-0
PubChem CIDNot recorded
DTXSIDDTXSID9066704
FormulaC7H4NNaO3S2
Mol. Weight237.22 g/mol
SMILES[Na+].[O-]S(=O)(=O)C1=NC2=CC=CC=C2S1

Data Sources

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Brief citations

2-Benzothiazolesulfonic acid, sodium salt (1:1) (CAS 21465-51-0) https://chemicalindependence.com/chemical/21465-51-0/ EPA TSCA Inventory: CAS 21465-51-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293420 for CAS 21465-51-0. Reporting year: 2024. https://usatrade.census.gov/