Definition
US FDA substance register · UNII COU5JQ433I · registered name 2-METHYL-1-NAPHTHOL · single chemical substance
Cosmetic roles
Safety & regulatory references
- Restricted
- Taiwan · United Kingdom
Source: ASEAN Cosmetic Directive · EU Cosmetics Regulation · MFDS (Korea) cosmetic regulatory information · Taiwan FDA cosmetic ingredients · Taiwan FDA cosmetic regulations · UK cosmetics regulations (OPSS)
ASEAN
- Field of application and/or use : Hair dye substance in oxidative hair dye products. Use for dyeing eyelashes and eyebrows is not permitted.
- Other limitations and requirements : After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 2.0% (When both 2-Methyl-1-Naphthol and 1-Acetoxy-2-Methylnaphthalene are present in a hair dye formulation, the maximum concentration on the head of 2-Methyl-1-Naphthol should not exceed 2.0%) The direction for use “wear suitable gloves” must be included in label or leaflet text.
- Conditions of use and warning which must be printed on the labels : The mixing ratio must be printed on the label. Hair colorants 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 Do not use to dye eyelashes or eyebrows
European Union
- Product Type, body parts : Hair dye substance in oxidative hair dye products
- Other : After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 2,0% (When both 2-Methyl-1-Naphthol and 1-Acetoxy-2-Methylnaphthalene are present in a hair dye formulation, the maximum concentration on the head of 2-Methyl-1-Naphthol should not exceed 2,0%).
- Wording of conditions of use and warnings : To be printed on the label: Hair colorants can cause severe allergic reactions.
Source: MFDS (Korea) cosmetic regulatory information
EU Cosmetics Regulation, Annex III (restricted substances), entry 213 · applies to Hair dye substance in oxidative hair dye products
Restriction Annex III/213 · SCCS opinion: Opinion on 2-Methyl-1-naphthol (including 1-Acetoxy-2-methylnaphthalene, A153)
Source: EU CosIng ingredient list
More data — names, identifiers, properties, test records, literature
Names & identifiers
- CAS No.chemical registry number
- 7469-77-4
- EC No.EU chemical inventory number
- 231-265-2
- DTXSIDUS EPA chemical ID
- DTXSID50225665
- DTXCIDUS EPA compound ID
- DTXCID80148156
- IUPAC
- 2-Methylnaphthalen-1-ol
- Molecular formula
- C11H10O
- Molecular weight
- 158.2 g/mol
What products actually use it for
What the 1 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.
- Dye1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
2 skin studies and 0 eye studies are on record.
The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.
See all 2 studies
- SkinSens1
Skin Sensitization · QSAR Predicted - SkinIrr2
Skin Irritation · QSAR Predicted
Source: US EPA CompTox dashboard
Linked databases 18
- ASEAN Cosmetic Directive
- ChEMBL
- EU CosIng ingredient list 2
- EU Cosmetics Regulation
- EU restricted substances (Annex III)
- EU SCCS safety opinions
- Korea Cosmetic Association ingredient dictionary
- MFDS (Korea) cosmetic ingredient register 2
- MFDS (Korea) cosmetic regulatory information 2 3 4
- Taiwan FDA cosmetic ingredients
- Taiwan FDA cosmetic regulations
- UK cosmetics regulations (OPSS)
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata