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Direct Violet 62

Name:C.I.Direct Violet 62,C.I.25400

Molecular Structure: Double azo class

C.I.Direct Violet 62,C.I.25400,CAS 7198-99-4,1050.85,C35H26N8Na4O17S4

C.I.Direct Violet 62,C.I.25400,CAS 7198-99-4,1050.85,C35H26N8Na4O17S4

Molecular Formula:C35H26N8Na4O17S4

Molecular Weight: 1050.85

CAS Registry Number:7198-99-4

Manufacturing Methods : 2-Amino-4-methoxy-5-acetamidobenzenesulfonic acid diazo, in acid conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid acid coupling, and then hydrolysis amino acylation and light gasification.

Properties and Applications: red light purple. Soluble in water for red light purple, slightly soluble in alcohol. The strong sulfuric acid for blu-ray black, diluted for purple. The dye solution to join strong hydrochloric acid for purple, have precipitation; Add thick sodium hydroxide solution for wine red, have precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3 5 5 2 2

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