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2,7-Naphthalenedisulfonic acid, 3-amino-5-hydroxy-

CAS 90-40-4

Molecular structure of 90-40-4
US productionNot reported
Import value, 2024$2M
Top sourceIndia 50%

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 292221 · basket

These shares come from HS customs code 292221, which covers 8 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IN 50%IndiaCN 47%ChinaDE 3%Germany

Why It Matters

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

Chemical Identity

CAS90-40-4
PubChem CIDNot recorded
DTXSIDDTXSID3059008
FormulaC10H9NO7S2
Mol. Weight319.3 g/mol
SMILESNC1=CC2=C(O)C=C(C=C2C=C1S(O)(=O)=O)S(O)(=O)=O

Data Sources

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Brief citations

2,7-Naphthalenedisulfonic acid, 3-amino-5-hydroxy- (CAS 90-40-4) https://chemicalindependence.com/chemical/90-40-4/ EPA TSCA Inventory: CAS 90-40-4. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 292221 for CAS 90-40-4. Reporting year: 2024. https://usatrade.census.gov/