Acid green 50

CAS 3087-16-9

Methanaminium, N-[4-[[4-(dimethylamino)phenyl](2-hydroxy-3,6-disulfo-1-naphthalenyl)methylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, inner salt, sodium salt (1:1)

Molecular structure of 3087-16-9 — 1 Na⁺

US productionNot reported

Import value, 2024$56M

Top sourceIndia 70%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

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

Where It Comes From

Customs basis: HS 320412 · basket

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

Why It Matters

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

Vendor Pricing

$0.68/gA2B Chem LLC

CountryUnited States

Pack$679.00 / 1 kg

Purity80%

Vendors10 available

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

9 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.72	1 kg	80%
Aaron Chemicals LLC	Hong Kong	$2.88	25 g	99%
Sigma-Aldrich (Rush Stock)	Germany	$2.95	25 g	—
Sigma-Aldrich	Germany	$2.95	25 g	—
Angene Chemical	China → Hong Kong	$3.00	25 g	99%
AK Scientific, Inc.	United States	$16.20	5 g	80%
Angene International Limited	United States	$32.00	5 g	80%
Labotest KG	Germany	$217.80	5000 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	99%

Chemical Identity

CAS3087-16-9

PubChem CIDNot recorded

DTXSIDDTXSID4046577

FormulaC27H25N2NaO7S2

Mol. Weight576.61 g/mol

SMILES[Na+].CN(C)C1=CC=C(C=C1)C(=C1C=CC(C=C1)=[N+](C)C)C1=C2C=CC(=CC2=CC(=C1O)S([O-])(=O)=O)S([O-])(=O)=O

Data Sources

EPA TSCA InventoryRetrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Acid green 50 (CAS 3087-16-9) https://chemicalindependence.com/chemical/3087-16-9/ EPA TSCA Inventory: CAS 3087-16-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 320412 for CAS 3087-16-9. Reporting year: 2024. https://usatrade.census.gov/