dye|World dye variety

Name:C.I.Reactive Red 219,C.I.181525

Molecular Structure: Single azo class

C.I.Reactive Red 219,C.I.181525,CAS 107231-51-6,893.51,C25H10Cl2N6Na4O13S4,Kayaract Red 7B,Procion Red MX-7B

Molecular Formula:C₂₅H₁₀Cl₂N₆Na₄O₁₃S₄

Molecular Weight: 893.51

CAS Registry Number:107231-51-6

Manufacturing Methods : 2-Aminonaphthalene-1,5-disulfonic acid diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, and then to 2,4,6-Ttrichloropyrimidine-5-carbonitrile condensation.

Properties and Applications: colourful red blue light.

List of Suppliers:

Kayaract Red 7B(Nippon Kayak u Co Ltd)

Procion Red MX-7B( Imperial Chemical Industries )