必应染料-您身边的染料专家

Direct Brown 5

Name:C.I.Direct Brown 5,C.I.30135

Molecular Structure: trisazo class

C.I.Direct Brown 5,C.I.30135,CAS 6844-77-5,682.57,C31H20N6Na2O8S

C.I.Direct Brown 5,C.I.30135,CAS 6844-77-5,682.57,C31H20N6Na2O8S

Molecular Formula:C31H20N6Na2O8S

Molecular Weight: 682.57

CAS Registry Number:6844-77-5

Manufacturing Methods :  4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then in alkaline conditions and 3-Aminobenzenesulfonic acid diazo, in acid conditions Resorcinol coupled with the product matches.

Properties and Applications: brown. Soluble in water for yellow brown, slightly soluble in alcohol. The strong sulfuric acid to red light purple, for yellow brown after diluted. The dye solution to join strong hydrochloric acid for orange brown, have precipitation; Add thick sodium hydroxide solution for red light orange brown.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 2 3-4 3 1-2 2

List of Suppliers:

 


Leave a Reply