Pigment Red 4
Used in cosmetic products as hair dyeing. Pigment Red 4 is classed chemically as a monoazo colour.
- Prohibited in EU cosmetics, Annex II/1345
- Allowed colorant, Annex IV/9
The chemical behind this ingredient
Structure, properties, safety data and price information live on the chemical page.
IUPAC name: 1-[(2-chloro-4-nitrophenyl)diazenyl]naphthalen-2-ol
- 2D structure and identifiers
- Measured and computed properties
- GHS safety summary
- Suppliers, prices and trade data
Pigment Red 4 suppliers
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Frequently asked questions
What is Pigment Red 4 used for in cosmetics?
Pigment Red 4 is used in cosmetic products as hair dyeing. Pigment Red 4 is classed chemically as a monoazo colour.
Is Pigment Red 4 restricted in cosmetics in the EU?
Pigment Red 4 is listed in the annexes of EU Cosmetics Regulation (EC) No 1223/2009: Annex II/1345 (prohibited in eu cosmetics), Annex IV/9 (allowed colorant). Always check the full annex entry for the conditions of use.
What is the CAS number of Pigment Red 4?
Pigment Red 4 is listed with CAS number 2814-77-9 and EC number 220-562-2.
Where can I buy Pigment Red 4?
8 suppliers list 1-((2-Chloro-4-nitrophenyl)azo)-2-naphthol on CompoundList. Compare them below or post a buy request with your grade and quantity.