C.I. Acid Red 1

CAS 3734-67-6

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

Molecular structure of 3734-67-6 — 2 Na⁺

US productionZero

Import value, 2024$56M

Import volume118.0K lb

Import dependency100%

Top sourceIndia 70%

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. Acid Red 1 · 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

2023: US production Zero · Imports 118.0K lb
2019: US production Zero · Imports 32.8K 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.

Target

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Vendor Pricing

$0.07/gAaron Chemicals LLC

CountryHong Kong

Pack$33.00 / 500 g

Purity90%

Vendors3 available

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

2 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.16	100 g	90%
AstaTech (2 weeks)	United States	$0.56	100 g	95%

Chemical Identity

CAS3734-67-6

PubChem CID19522

DTXSIDDTXSID9044663

FormulaC18H13N3Na2O8S2

Mol. Weight509.4 g/mol

SMILESCC(=O)NC1=C2C(=CC(=C1)S(=O)(=O)[O-])C=C(C(=C2O)N=NC3=CC=CC=C3)S(=O)(=O)[O-].[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID9044663Retrieved 2026-04-06
PubChem · compound 19522Retrieved 2026-04-06
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. Acid Red 1 (CAS 3734-67-6) https://chemicalindependence.com/chemical/3734-67-6/ EPA CompTox (DSSTox): DTXSID9044663. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9044663 PubChem: 19522. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/19522 EPA Chemical Data Reporting: 3734-67-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320412 for CAS 3734-67-6. Reporting year: 2024. https://usatrade.census.gov/