Regulatory data is for reference only. Always verify with the official regulator before making formulation decisions. Last refreshed: 7/12/2026.

Ingredients/8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3',2'-m]triphenodioxazine (Pigment Violet 23; CI 51319) when used as a substance in hair dye products

8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3',2'-m]triphenodioxazine (Pigment Violet 23; CI 51319) when used as a substance in hair dye productsCAS 6358-30-1

EU CosIng Annex II — prohibitedEU CosIng Annex IV — colorant

Regulatory status

Source	Status	Annex / Details	Limit / Conditions	Last updated
EU CosIng	prohibited	Annex II		—
EU CosIng	colorant	Annex IV	Rinse-off products	—

What this means

8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3',2'-m]triphenodioxazine (Pigment Violet 23; CI 51319) when used as a substance in hair dye products has regulatory signals in EU CosIng and EU CosIng. Review the source links above for the official conditions and latest updates.

Common questions

Is 8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3',2'-m]triphenodioxazine (Pigment Violet 23; CI 51319) when used as a substance in hair dye products restricted in EU cosmetics?: 8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3',2'-m]triphenodioxazine (Pigment Violet 23; CI 51319) when used as a substance in hair dye products is prohibited in EU cosmetics according to EU CosIng Annex II.
What is the CAS number for 8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3',2'-m]triphenodioxazine (Pigment Violet 23; CI 51319) when used as a substance in hair dye products?: The CAS number for 8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3',2'-m]triphenodioxazine (Pigment Violet 23; CI 51319) when used as a substance in hair dye products is 6358-30-1.

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