Solvent red 23 (inci)

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

CAS number: 85-86-9; Ceresin Red; Sudan Ⅲ; Sudan Red

Definition
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Solvent red 23 is a red azo dye with the molecular formula: C22H16N4O. Solvent red 23 dissolves in various organic solvents (e.g. ether) and in oily bases. The dye is used in the cosmetic field as a reddish-brown coloring agent which dyes skin, nails or hair. It is also used to colour waxes, oils and spirit varnishes. In microscopy it is used for vital staining (Sudanglycerol).

Note(s)
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The framework conditions for colouring agents that may be used in cosmetics are defined in the EC Cosmetics Regulation (1223/2009) Annex III

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Last updated on: 29.10.2020