C.I. Solvent Red 135

CAS 20749-68-2

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

Molecular structure of 20749-68-2
US productionZero
Import value, 2024$52M
Import volumeCBI
Top sourceIndia 34%

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 320419 · basket

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

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 (2)
Lanxess
Milliken &

Why It Matters

Sectors
Plastics & Rubber
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 1 functional role.

  • •Dye in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Dye in Plastics Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$2.75/gCombi-Blocks, Inc.
CountryUnited States
Pack$275.00 / 100 g
Purity98%
Vendors16 available

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

Chemical Identity

CAS20749-68-2
PubChem CID88680
DTXSIDDTXSID6041260
FormulaC18H6Cl4N2O
Mol. Weight408.1 g/mol
SMILESC1=CC2=C3C(=C1)N=C4C5=C(C(=C(C(=C5Cl)Cl)Cl)Cl)C(=O)N4C3=CC=C2

Data Sources

Brief citations

C.I. Solvent Red 135 (CAS 20749-68-2) https://chemicalindependence.com/chemical/20749-68-2/ EPA CompTox (DSSTox): DTXSID6041260. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6041260 PubChem: 88680. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/88680 EPA Chemical Data Reporting: 20749-68-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 20749-68-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320419 for CAS 20749-68-2. Reporting year: 2024. https://usatrade.census.gov/