C.I. Disperse Blue 79:1

CAS 3618-72-2

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

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$43M

Top sourceJapan 29%

At least one company claimed its 2019 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: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 320411 · basket

EPA reports by year

2023: US production Not published · Imports Not published
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 320411, which covers 44 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

JP 29%JapanMX 21%MexicoID 14%IndonesiaIN 13%IndiaCN 11%China

Canada
South Korea
Hong Kong
Italy
Netherlands
Denmark
Brazil
Belgium
Switzerland

EPA-registered importers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Huntsman

Why It Matters

Sectors

Textiles

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

•Dye in Textiles, apparel, and leather manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS3618-72-2

PubChem CID77172

DTXSIDDTXSID8027539

FormulaC23H25BrN6O10

Mol. Weight625.4 g/mol

SMILESCC(=O)NC1=CC(=C(C=C1N=NC2=C(C=C(C=C2Br)[N+](=O)[O-])[N+](=O)[O-])OC)N(CCOC(=O)C)CCOC(=O)C

Data Sources

EPA CompTox (DSSTox) · DTXSID8027539Retrieved 2026-04-06
PubChem · compound 77172Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

C.I. Disperse Blue 79:1 (CAS 3618-72-2) https://chemicalindependence.com/chemical/3618-72-2/ EPA CompTox (DSSTox): DTXSID8027539. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8027539 PubChem: 77172. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/77172 EPA Chemical Data Reporting: 3618-72-2. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3618-72-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320411 for CAS 3618-72-2. Reporting year: 2024. https://usatrade.census.gov/