AKA: C.I. Acid Orange 7, 2-naphthol orange, ORANGE 4, DC ORANGE NO. 4, 4-((2-Hydroxy-1-naphthalenyl)azo)benzenesulfonic acid monosodium salt, Beta-naphthol orange, AO-7 dye
Synthetic
Colorant
Not Clean
structure; see also record for C.I. Solvent Orange 2
State
Orange-brown solid; [Merck Index] Dark red powder; [Sigma-Aldrich MSDS]
Functions
Cosmetic Colorant
Gives the product its color. Purely aesthetic — makes the formula look good in the jar but does nothing for your skin.
Verified Jun 2026
Data: PubChem · CosIng