dye|World dye variety

Name:C.I.Direct Blue 70,C.I.34205

Molecular Structure: trisazo class

C.I.Direct Blue 70,C.I.34205,CAS 6428-58-6,1055.91,C42H25N7Na4O13S4,Blue D-RGL,Direct Fast Blue FG,Dycosdirect Fast Blue RGL

Molecular Formula:C₄₂H₂₅N₇Na₄O₁₃S₄

Molecular Weight: 1055.91

CAS Registry Number:6428-58-6

Manufacturing Methods :  2-Aminobenzene-1,4-disulfonic acid diazo, and Naphthalen-1-amine coupling, its product to diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, again diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications: blue. Blue gray powder. Soluble in water as dark blue, solubility of 50 g/L (60 ℃), 60 g/L (97 ℃), soluble in alcohol. The strong sulfuric acid for blu-ray black, diluted for dark purple. The dye solution to join strong hydrochloric acid generation navy to purple precipitation; Add sodium hydroxide solution for red light purple, have precipitation. Cellulose fiber of dyeing, temperature in 80 ℃ maximum when affinity. Good levelness, discharge sex very good: dyeing encounter copper, iron ion basic discoloration. Mainly used for silk, cotton viscose things and carpet of dyeing and printing. But with disperse dyestuffs dye polyester/stick blended fabric. Suitable for a bath dyeing of step. Can also be used for paper dyeing and manufacturing color pigment sediment

List of Suppliers:

Tianjin Yadong Group

Blend Blue D-RGL (Sinochem Liaoning Import & Export Corporation)

Direct Fast Blue FG ( Sinochem Tianjin Imp Exp Corp )

Direct Fast Blue FG (Shandong Qing Shun Chemical Co., Ltd.)

Dycosdirect Fast Blue RGL(Brighten Colorchem BV)

Dycosdirect Fast Blue RGL (Sinochem Shanghai I/E Corp/Schecho PuDong Corporation)

Fast Blue RGL(Sinochem Ningbo Imp & Exp Corp)

Sirius Blue FG( IG Farbenindustrie AG )