CI 42520  (Basic violet 2) is a synthetic triphenylmethane violet dye. Triphenylmethane is a hydrocarbon.

Chemical Name:

 [4-[bis(4-amino-3-methylphenyl)methylidene]-2-methylcyclohexa-2,5-dien-1-ylidene]azanium;chloride

What it is used for and where

Cosmetics

Restricted cosmetic ingredient as  IV/67 (CI 42520) III/278 (Basic Violet 2) a Relevant Item in the Annexes of the European Cosmetics Regulation 1223/2009. Substance or ingredient reported: 4-[(4-Amino-m-tolyl)(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-o-toluidine monohydrochloride

Cosmetics - INCI Functions

• Colorant. This ingredient has the function of colouring the solution in which it is inserted in a temporary, semi-permanent or permanent manner, either alone or in the presence of the complementary components added for colouring.
• Hair dyeing. It is an ingredient that adds a colouring to the hair that can be temporary, semi-permanent or permanent depending on what other ingredients are added to achieve the result. The pH for hair dyeing is generally between 9 and 10.

Safety

 It is an ingredient that has some important health-related contraindications: it should only be used in cosmetic products that have contact with the skin for a short time.

Molecular Formula      C₂₂H₂₄ClN₃

Molecular Weight    365.9 g/mol

CAS    3248-91-7

EC number 221-831-7

Synonyms: 

Basic violet 2

New fuchsin

Trimethyl fuchsin

Isorubine

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