Skip to content

Colorant

2,4-Dihydro-5-methyl-2-phenyl-4-(phenylazo)-3H-pyrazol-3-one

CAS 4314-14-1
15

Safety score · 0–100

Avoid

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

A phenylazo pyrazolone dye — listed on the EU Annex II banned-in-cosmetics list. Genotoxic concerns from azo cleavage products drive the ban.

Skin benefits

  • Industrial colour use only

Known concerns

  • EU Annex II banned actor
  • Azo-dye aromatic-amine release
  • Genotoxicity / sensitisation

References

EU

EU CosIng database

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

Related colorants

15
6-Methoxy-N2-methyl-2,3-pyridinediamine hydrochloride and dihydrochloride salt
Colorant
 15
COBALT TITANIUM OXIDE
Colorant
 15
Colouring agent CI 12075 (Pigment Orange 5) and its lakes, pigments and salts
Colorant
 15
Disodium [29H,31H-phthalocyaninedisulphonato(4-)-N29,N30,N31,N32]cuprate(2-)
Colorant
 15
Phenol, 2-Chloro-6-(ethylamino)-4-nitro- (see note 17)
Colorant
 15
Phenol, 2-Chloro-6-(ethylamino)-4-nitro- and its salts
Colorant
 14
P-PHENYLENEDIAMINE
Colorant
 18
4-NITRO-M-PHENYLENEDIAMINE
Colorant

Check your shelf

Find 2,4-Dihydro-5-methyl-2-phenyl-4-(phenylazo)-3H-pyrazol-3-one in your products.

Scan any cosmetic product with LuxSense to see if it contains 2,4-Dihydro-5-methyl-2-phenyl-4-(phenylazo)-3H-pyrazol-3-one 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, so always read the physical product label and consult a healthcare professional for personal concerns.