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C.I. Sulphur Black 1

CAS 1326-82-5

Companies reported imports and no US production of this chemical to EPA for 2023.

Molecular structure of 1326-82-5
US productionZero
Import value, 2024$52M
Import volume119.0K lb
Import dependency100%
Top sourceIndia 34%

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.

C.I. Sulphur Black 1 · US import value by year
$98M2013$148M2018$52M2024$50M2025

2013: $98M · Peak 2018: $148M · 2024: $52M · 2025: $50M

Where It Comes From

Customs basis: HS 320419 · basket

EPA reports by year
2023
US production Zero · Imports 119.0K lb
2019
US production Zero · Imports 393.2K lb

These shares come from HS customs code 320419, which covers 36 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IN 34%IndiaCN 14%ChinaJP 13%JapanDE 12%GermanyCA 7%Canada
EPA-registered importers (1)
Atul Usa

Why It Matters

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

Industrial Uses

  • •Dye in Synthetic Dye and Pigment ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS1326-82-5
PubChem CID73557531
DTXSIDDTXSID5029213
FormulaC18H8N4O5S2
Mol. Weight424.4 g/mol
SMILESC1=CC2=C(C=C1[N+](=O)[O-])NC3=C(S2)C=C4C(=C3)N=C5C=C(C(=O)C=C5S4)[N+](=O)[O-]

Data Sources

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Brief citations

C.I. Sulphur Black 1 (CAS 1326-82-5) https://chemicalindependence.com/chemical/1326-82-5/ EPA CompTox (DSSTox): DTXSID5029213. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5029213 PubChem: 73557531. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/73557531 EPA Chemical Data Reporting: 1326-82-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1326-82-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320419 for CAS 1326-82-5. Reporting year: 2024. https://usatrade.census.gov/