Ethaanaminium, N-(4-((4-diëthylamino)fenyl)(5-hydroxy-2,4-disulfofenyl)methyleen)-2,5-cyclohexadieen-1-ylideen)-N-ethyl-, hydroxide, inwendig zout, calciumzout (2:1) (Acid Blue 3; CI 42051), indien gebruikt als bestanddeel van haarkleurmiddelen
Ethanaminium, N-(4-((4-diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, calcium salt (2:1) (Acid Blue 3; CI 42051) when used as a substance in hair dye products