C.I. Acid Blue 113

CAS 3351-05-1

Companies reported imports and no US production of this chemical to EPA for 2019.

Molecular structure of 3351-05-1 — 2 Na⁺

US productionZero

Import value, 2024$56M

Import volume22.1K lb

Import dependency100%

Top sourceIndia 70%

Production is reported production, not a complete census of factories. Production reporting year: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

C.I. Acid Blue 113 · US import value by year

2013: $63M · Peak 2022: $90M · 2024: $56M · 2025: $58M

Where It Comes From

Customs basis: HS 320412 · basket

EPA reports by year

2019: US production Zero · Imports 22.1K lb

These shares come from HS customs code 320412, which covers 106 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).

IN 70%IndiaMY 7%MalaysiaCH 4%SwitzerlandCN 4%ChinaDE 3%Germany

Ireland
United Kingdom
Spain
South Korea
Denmark
Pakistan
Hong Kong
Czech Republic
Brazil
Turkey

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.

Organic Dyes And Pigments

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 (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$2.33/gAaron Chemicals LLC

CountryHong Kong

Pack$582.00 / 250 g

PurityNot recorded

Vendors2 available

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

1 more vendor

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$113.00	1 g	—

Chemical Identity

CAS3351-05-1

PubChem CID18776

DTXSIDDTXSID7044920

FormulaC32H21N5Na2O6S2

Mol. Weight681.7 g/mol

SMILESC1=CC=C(C=C1)NC2=C3C(=C(C=C2)N=NC4=CC=C(C5=CC=CC=C54)N=NC6=CC(=CC=C6)S(=O)(=O)[O-])C=CC=C3S(=O)(=O)[O-].[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID7044920Retrieved 2026-04-06
PubChem · compound 18776Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

C.I. Acid Blue 113 (CAS 3351-05-1) https://chemicalindependence.com/chemical/3351-05-1/ EPA CompTox (DSSTox): DTXSID7044920. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7044920 PubChem: 18776. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/18776 EPA Chemical Data Reporting: 3351-05-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3351-05-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320412 for CAS 3351-05-1. Reporting year: 2024. https://usatrade.census.gov/