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C.I. Direct Black 22

CAS 6473-13-8

2-Naphthalenesulfonic acid, 6-[2-(2,4-diaminophenyl)diazenyl]-3-[2-[4-[[4-[2-[7-[2-(2,4-diaminophenyl)diazenyl]-1-hydroxy-3-sulfo-2-naphthalenyl]diazenyl]phenyl]amino]-3-sulfophenyl]diazenyl]-4-hydroxy-, sodium salt (1:3)

U.S. production volumes are classified as confidential business information.

Molecular structure of 6473-13-8
3 Na⁺
US productionCBI
Import value, 2024$18M
Top sourceIndia 41%

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. US production volume is confidential. 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 320414 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential

These shares come from HS customs code 320414, which covers 36 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IN 41%IndiaMX 33%MexicoJP 8%JapanDE 6%GermanyTW 3%Taiwan

Why It Matters

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

Industrial Uses

  • •Dye in Synthetic Dye and Pigment Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.31/gAaron Chemicals LLC
CountryHong Kong
Pack$157.00 / 500 g
PurityNot recorded
Vendors2 available

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

1 more vendor
VendorCountry$/gPackPurity
AA BLOCKSUnited States$18.805 g—

Chemical Identity

CAS6473-13-8
PubChem CIDNot recorded
DTXSIDDTXSID7027629
FormulaC44H32N13Na3O11S3
Mol. Weight1083.97 g/mol
SMILES[Na+].[Na+].[Na+].NC1=CC(N)=C(C=C1)N=NC1=CC2=C(C=C1)C=C(C(N=NC1=CC=C(NC3=C(C=C(C=C3)N=NC3=C(O)C4=C(C=CC(=C4)N=NC4=C(N)C=C(N)C=C4)C=C3S([O-])(=O)=O)S([O-])(=O)=O)C=C1)=C2O)S([O-])(=O)=O

Data Sources

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Brief citations

C.I. Direct Black 22 (CAS 6473-13-8) https://chemicalindependence.com/chemical/6473-13-8/ EPA TSCA Inventory: CAS 6473-13-8. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 6473-13-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 6473-13-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320414 for CAS 6473-13-8. Reporting year: 2024. https://usatrade.census.gov/