Skip to content

Other

Disodium 5-acetylamino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate

CAS 3734-67-6
45

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

An anionic azo dye (Acid Red 1 / C.I. 18050) permitted in cosmetics but explicitly excluded from use on mucous membranes under EU restrictions.

C.I. Acid Red 1 (CAS 3734-67-6) is a synthetic anionic azo dye commonly used in colourant applications. EU Regulation 1223/2009 Annex III restricts this substance specifically from products applied on mucous membranes due to potential absorption concerns. The compound contains a phenylazo group, which under reductive cleavage conditions can release aromatic amines — a key regulatory concern for all azo colourants in the EU.

Known concerns

  • EU restriction — not to be used on mucous membranes
  • Azo dye — potential amine cleavage under reducing conditions
  • Absorption concern on sensitive epithelia

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related others

45
1-Methylamino-2- nitro-5-(2,3-dihydroxy-propyloxy)- benzene
Other
 45
2,3-DIMETHYL-4-FORMYL-1-PHENYL-5-PYRAZOLONE
Other
 45
2-(4-Amino-3-nitroanilino)ethanol
Other
 45
2-CYANOMETHOXY-P-PHENYLENEDIAMINE
Other
 45
2-ETHYL-4-HYDROXY-5-METHYLFURAN-3(2H)-ONE
Other
 45
2-METHYL-1-NAPHTHOL
Other
 45
2-[(4-Methoxy-2-nitrophenyl)azo]-3-oxo-N-(o-tolyl)butyramide
Other
 45
4-METHYL-2-PHENYL-2-PENTENAL
Other

Check your shelf

Find Disodium 5-acetylamino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate in your products.

Scan any cosmetic product with LuxSense to see if it contains Disodium 5-acetylamino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate and get a full ingredient breakdown with safety scores.

This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.