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Pigment Blue 9

Catalog Number DYE-PIG-0303
CAS Number 1325-74-2
Molecular Weight 363.9
Molecular Formula C23H24ClN2+
CI Number C.I.42025:1
Color brilliant green light blue.
Lightfastness Good
Main Molecular Structure triarylmethane
Oleic Acid Insoluble
Preparation Method 2-Chlorobenzaldehyde and N,N-dimethylaniline condensation, then use Lead dioxide and acid oxidation its product, reoccupy phosphorus molybdenum acid lake change.
Properties Soluble in water for green blue, soluble in ethanol for green blue. In concentrated sulfuric acid for the red light yellow, yellow to green for diluted, and kelly precipitation. Dye aqueous solution to join sodium hydroxide have blue black precipitation, and then into the red brown solution.
Soap Micelle Bleeding Serious

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