# 2,7-Naphthalenedisulfonic acid, 3-[2-(4-cyclohexyl-2-methylphenyl)diazenyl]-4-hydroxy-5-[[(4-methylphenyl)sulfonyl]amino]-, sodium salt (1:2)

URL: https://app.greenveil.ai/ingredients/ingredient_cas_10236_37_0
Categories: beauty, industrial
Functions: colorant, Dye
Identifier: 10236-37-0

> 2,7-Naphthalenedisulfonic acid, 3-[2-(4-cyclohexyl-2-methylphenyl)diazenyl]-4-hydroxy-5-[[(4-methylphenyl)sulfonyl]amino]-, sodium salt (1:2) is used as colorant / dye. Greenveil chemical-concern score: 25/100 — Minor concern based on regulatory listings.. Assessed from 3 sources.

## Safety assessment

- Chemical concern score: 25/100 — Minor concern based on regulatory listings.
- Confidence: 4
- Rationale: 2,7-Naphthalenedisulfonic acid, 3-((4-cyclohexyl-2-methylphenyl)azo)-4-hydroxy-5-(((4-methylphenyl)sulfonyl)amino)-, disodium salt is listed in Annex IV of the EU Cosmetics Regulation (EC) 1223/2009 (colorants allowed in cosmetic products).

## Regulatory status

- EU: allowed_listed — Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Rinse-off products
- US: commercial use observed — EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Dye.

_Assessed by Greenveil._