1-Naphthol and its salts
⚠ EU RestrictedIdentification
CAS Number 90-15-3
EINECS / EC 201-969-4
CosIng Ref 84331
Chemical Name naphthalen-1-ol
IUPAC Name —
Formula C10H8O
Mol. Weight 144.17 g/mol
InChIKey KJCVRFUGPWSIIH-UHFFFAOYSA-N
Function & Classification
EU Regulatory Status
Conditions of Use Hair colourants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary ‘black henna’ tattoos may increase your risk of allergy. Do not colour your hair if: — you have a rash on your face or sensitive, irritated and damaged scalp, — you have ever experienced any reaction after colouring your hair, — you have experienced a reaction to a temporary ‘black henna’ tattoo in the past
SCCS Opinion View SCCS opinion →
Safety Profile
No toxicology data available yet for this ingredient.
Check SCCS opinions or CIR reports for published safety assessments.
NOAEL · Dermal Absorption % · Sensitization
Formulation Guidelines
Usage level, pH range, solubility and addition phase not yet available.
Usage Level % · Addition Phase · Solubility
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Documents