Flag of the United StatesAmerican Chemical Independence

3-Aminobenzenesulfonic acid

CAS 121-47-1

EPA’s 2023 records show zero U.S. production of this chemical.

Molecular structure of 121-47-1
US productionZero
Import value, 2024$30M
Import volumeCBI
Top sourceChina 49%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. Production reporting year: 2023. 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

EPA reports by year
2023
US production Zero · Imports Confidential
2019
US production Confidential · Imports Confidential

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
Domestic parents -- activity not disclosed (1)
Archroma U.S

Why It Matters

Sectors
Textiles
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

  • •Intermediate in Synthetic Dye and Pigment Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.02/gAaron Chemicals LLC
CountryHong Kong
Pack$11.00 / 500 g
Purity98%
Vendors29 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

28 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.03500 g98%
A2B Chem LLCUnited States$0.031 kg98%
AA BLOCKSUnited States$0.041 kg98%
BLD Pharmatech Co., LimitedUnited States$0.041 kg98%
BLD Pharmatech GmbHGermany$0.041 kg98%
BLD Pharmatech Ltd.China$0.041 kg98%
Ambeed, Inc.United States$0.041 kg98%
ChemsceneUnited States$0.051 kg—
AK Scientific SpecializedUnited States$0.08500 g95%
Fluorochem EUGermany$0.10100 g98%
AK Scientific, Inc.United States$0.11500 g98%
MedChemExpress MCESweden$0.13500 g99.96%
Angene International LimitedUnited States$0.20500 g95%
Combi-Blocks, Inc.United States$0.251 kg98%
Sigma-Aldrich (Rush Stock)Germany$0.28250 g97%
Sigma-AldrichGermany$0.28250 g97%
AstaTech (2 weeks)United States$3.9625 g95%
MedKoo Biosciences, IncUnited States$4.50100 g98%
HTS Biochemie InnovationenGermany$170.005 g95%
SpecsNetherlands$181.265 g90%
Labotest KGGermany$217.805000 mg90%
Otava, Ltd.Ukraine$2280.0050 mg95%
Otava, Ltd. (2 weeks)Ukraine$2724.0050 mg95%
Princeton BioMolecular Research (SC)United States$2900.00100 mg90%
Vitas M Chemical LimitedHong Kong$3170.00100 mg90%
AngeneChina → Hong Kong$4266.6730 mg98%
ChemDiv, Inc.United States$7666.6715 mg90%
TimTec, LLCUnited States$90000.002 mg90%

Chemical Identity

CAS121-47-1
PubChem CID8474
DTXSIDDTXSID6024462
FormulaC6H7NO3S
Mol. Weight173.19 g/mol
SMILESC1=CC(=CC(=C1)S(=O)(=O)O)N

Data Sources

← Back to Dashboard← Back to Textiles

Brief citations

3-Aminobenzenesulfonic acid (CAS 121-47-1) https://chemicalindependence.com/chemical/121-47-1/ EPA CompTox (DSSTox): DTXSID6024462. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6024462 PubChem: 8474. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/8474 EPA Chemical Data Reporting: 121-47-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 121-47-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292142 for CAS 121-47-1. Reporting year: 2024. https://usatrade.census.gov/