Is Spirit Blue vegan?

Spirit Blue

Vegan

Spirit Blue, also known as Opal Blue SS or Solvent Blue 23, is a synthetic triphenylmethane dye listed in the Colour Index as CI 42760. It is used as a solvent-soluble blue colorant in various applications.

Also known as Opal Blue SS, Solvent Blue 23
CAS number 2152-64-9
CI number CI 42760
Last reviewed 3 June 2026

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