Synthetic pigment intermediate
1,3-Isobenzofurandione, reaction products with methylquinoline and quinoline
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
An industrial reaction product of phthalic anhydride with quinolines used as a yellow colorant. Quinoline chemistry and limited public safety data place it in the cautious range for cosmetic transparency.
Skin benefits
- Yellow industrial pigment intermediate (Solvent Yellow 33-type) used as colorant
- High tinctorial strength at low loadings
- Stable in many cosmetic vehicles
- Useful for shade adjustment in color cosmetics
Known concerns
- Quinoline-based pigments are tied to genotoxicity concerns in some assessments
- Reaction-product profile means impurities and isomers vary by lot
- Not on EU permitted colorant list for general cosmetic use under this CAS
- Limited skin-contact safety data published
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
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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.