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C.I. Acid Green 1

CAS 19381-50-1

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

Molecular structure of 19381-50-1
3 Na⁺ · 1 Fe³⁺
US productionZero
Import value, 2024$56M
Import volume5 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 Green 1 · US import value by year
$63M2013$90M2022$56M2024$58M2025

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 5 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
IN 70%IndiaMY 7%MalaysiaCH 4%SwitzerlandCN 4%ChinaDE 3%Germany
EPA-registered importers (1)
Yara North America

Why It Matters

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

Chemical Identity

CAS19381-50-1
PubChem CID6915910
DTXSIDDTXSID4044406
FormulaC30H15FeN3Na3O15S3
Mol. Weight878.5 g/mol
SMILESC1=CC2=C(C=CC(=C2N=O)[O-])C=C1S(=O)(=O)[O-].C1=CC2=C(C=CC(=C2N=O)[O-])C=C1S(=O)(=O)[O-].C1=CC2=C(C=CC(=C2N=O)[O-])C=C1S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Fe+3]

Data Sources

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Brief citations

C.I. Acid Green 1 (CAS 19381-50-1) https://chemicalindependence.com/chemical/19381-50-1/ EPA CompTox (DSSTox): DTXSID4044406. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4044406 PubChem: 6915910. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6915910 EPA Chemical Data Reporting: 19381-50-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320412 for CAS 19381-50-1. Reporting year: 2024. https://usatrade.census.gov/