2-METHYL-1-NAPHTHOL

2-METHYL-1-NAPHTHOL in plain language

What it is

Also known as 1-Hydroxy-2-methylnaphthalene · 2-Methylnaphthalen-1-ol · 1-NAPHTHOL, 2-METHYL- · 1-Naphthalenol, 2-methyl- · 2-Methyl-1-naphthalenol · 2-Methyl-a-naphthol

Show all 13 names

2-Methyl-alpha-naphthol · 2-Methyl-naphthalen-1-ol · 2-methyl-l-naphthol · 2-methyl-naphthol · Srjcjjkwvssell-uhfffaoysa-n · UNII-COU5JQ433I · methylnaphtol

What it does

Used in cosmetics as a hair dye.

• Hair dyeing
• Colourant

Is it a concern?

High concern: no hazard classifications on record. It is restricted in EU cosmetics.

Why it's flagged

1-Hydroxy-2-methylnaphthalene is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — restricted

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

• EU Annex III — restricted
• EU restricted in cosmetics

• EU·EC

  Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Product types: Hair dye substance in oxidative hair dye products Other conditions: 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%). Conditions of use and warnings: To be printed on the label: Hair colorants can cause severe allergic reactions.

  restricted
  View source →

• EU·CosIng·Active2 entries

  • Cosmetics Regulation annex III / ref 213.Source →
  • Restriction: Annex III/213Source →
• US·EPA·commercial use observedEPA CPDat observed this chemical in 1 composition records across product categories including Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Dye.

  • EPA CPDat observed this chemical in 1 composition records across product categories including Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Dye.Source →
• US·FDA·listed in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.

  • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for 2-METHYL-1-NAPHTHOL. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

• SCCS

  EU Scientific Committee on Consumer Safety

  No SCCS opinion on file.

• CIR

  Cosmetic Ingredient Review (US expert panel)

  No CIR safety assessment on file.