Flag of the United StatesAmerican Chemical Independence

Cibacron Brilliant Red B

CAS 16893-49-5

2,7-Naphthalenedisulfonic acid, 5-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[2-(2-sulfophenyl)diazenyl]-

Molecular structure of 16893-49-5
US productionNot reported
Import value, 2024$309M
Top sourceChina 40%

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 293369 · basket

These shares come from HS customs code 293369, which covers 192 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 40%ChinaJP 19%JapanIN 15%IndiaES 11%SpainDE 5%Germany

Why It Matters

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

Chemical Identity

CAS16893-49-5
PubChem CIDNot recorded
DTXSIDDTXSID4066129
FormulaC19H14ClN7O10S3
Mol. Weight631.99 g/mol
SMILESNC1=NC(Cl)=NC(NC2=C3C(O)=C(N=NC4=C(C=CC=C4)S(O)(=O)=O)C(=CC3=CC(=C2)S(O)(=O)=O)S(O)(=O)=O)=N1

Data Sources

← Back to Dashboard

Brief citations

Cibacron Brilliant Red B (CAS 16893-49-5) https://chemicalindependence.com/chemical/16893-49-5/ EPA TSCA Inventory: CAS 16893-49-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293369 for CAS 16893-49-5. Reporting year: 2024. https://usatrade.census.gov/