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Pigment Violet 8

Catalog Number DYE-PIG-0328
CAS Number 1325-20-8
Structure
Synonyms Basolan Violet B
Molecular Weight 577.59
Molecular Formula C27H19N3O8S2
CI Number C.I.18005:1
Color brilliant red.
Lightfastness General
Main Molecular Structure Single azo
Preparation Method Naphthalen-1-amine diazotization, and 4-Benzamido-5-hydroxynaphthalene-1,7-disulfonic acid coupling and changed into barium salt.
Properties Soluble in water to red, right amount soluble in alcohol for magenta. In concentrated sulfuric acid for magenta, dilution for pink. Aqueous solution to join concentrated hydrochloric acid for magenta; Join strong caustic for orange brown.

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