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Pigment Blue 19

Catalog Number DYE-PIG-0295
CAS Number 58569-23-6
Molecular Weight 573.64
Molecular Formula C32H28N3NaO4S
CI Number C.I.42750:1
Color blue.
Lightfastness GeneralGood
Main Molecular Structure triarylmethane
Oleic Acid Well
Preparation Method with concentrated sulfuric acid sulfonating C.I.Acid Blue 3 (C.I. 42775) and changed into free acid derivatives.
Properties Soluble in hot water colorless, insoluble in water, slightly soluble in alcohol. In concentrated sulfuric acid for brown light red, blue, and after diluted blue precipitation. Water soluble paint an illusion of the senses to join sodium hydroxide as red brown. With C.I.Acid Blue 110 the same chemical structure.
Soap Micelle Bleeding Slightly

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