# C.I. Acid Red 1

URL: https://app.greenveil.ai/ingredients/ingredient_cas_3734_67_6
Categories: beauty, cleaning, industrial
Functions: colorant, Dye, Fragrance
Identifier: 3734-67-6

> C.I. Acid Red 1 is used as colorant / dye. Greenveil chemical-concern score: 25/100 — Minor concern based on regulatory listings.. Assessed from 5 sources.

## Safety assessment

- Chemical concern score: 25/100 — Minor concern based on regulatory listings.
- Confidence: 4
- Rationale: Disodium 5-acetylamino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate 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: Not to be used in products applied on mucous membranes Conditions of use and warnings: Purity criteria as set out in Commission Directive 95/45/EC (E 128)
- US: commercial use observed — EPA CPDat observed this chemical in 7 composition records across product categories including Laboratory supplies, Cleaning products and household care, Vehicle. EPA CPDat classifies this chemical for functional uses including Dye, Fragrance.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

_Assessed by Greenveil._