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Ammonium 2-amino-5-nitrobenzenesulfonate

CAS 4346-51-4

Benzenesulfonic acid, 2-amino-5-nitro-, ammonium salt (1:1)

Molecular structure of 4346-51-4
1 NH₄⁺
US productionNot reported
Import value, 2024$30M
Top sourceChina 49%

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 292142 · basket

These shares come from HS customs code 292142, which covers 67 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 49%ChinaIN 34%IndiaDE 6%GermanyCA 4%CanadaKR 3%South Korea

Why It Matters

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

Chemical Identity

CAS4346-51-4
PubChem CIDNot recorded
DTXSIDDTXSID2063424
FormulaC6H9N3O5S
Mol. Weight235.21 g/mol
SMILES[NH4+].NC1=CC=C(C=C1S([O-])(=O)=O)[N+]([O-])=O

Data Sources

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Brief citations

Ammonium 2-amino-5-nitrobenzenesulfonate (CAS 4346-51-4) https://chemicalindependence.com/chemical/4346-51-4/ EPA TSCA Inventory: CAS 4346-51-4. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 292142 for CAS 4346-51-4. Reporting year: 2024. https://usatrade.census.gov/