ACID BLUE 9; ACID BLUE 9 AMMONIUM SALT; ACID BLUE 9 ALUMINUM LAKE is graded A (Safe) by Expert·ING, based on EU COSING Annex IV regulatory data.

ACID BLUE 9; ACID BLUE 9 AMMONIUM SALT; ACID BLUE 9 ALUMINUM LAKE

Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, disodium salt

Safety grade: A

This colorant is permitted in EU cosmetics but restricted to certain product types or conditions of use under EU Cosmetics Regulation (EC) No 1223/2009. To be sold legally in the EU or UK, a product must meet these conditions.

Graded using: EU COSING Annex IV.

• EU COSING — Permitted

Last verified: June 9, 2026