Direct Blue 136
Name:C.I.Direct Blue 136,C.I.24065
Molecular Structure: Double azo class
Molecular Formula:C35H31N7Na2O11S2
Molecular Weight: 835.77
CAS Registry Number:6473-30-9
Manufacturing Methods : 3,3′-Dimethoxylbenzidine double nitriding, first and 4-Acetamido-5-hydroxynaphthalene-1,7-disulfonic acid coupling, then with N-(3-amino-4-methylphenyl)acetamide coupling.
Properties and Applications: blue. Soluble in water for red light blue, soluble in ethanol. The strong sulfuric acid as dark blue light in purple, blue after diluted precipitation. Dye with strong hydrochloric acid solution for violet black, precipitation; With strong sodium hydroxide solution for red light brown, have precipitation; Add 10% sodium hydroxide solution for red light purple.
Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
Fading | Stain | Fading | Stain | ||||
ISO | 4 | 5 | 2 | 4 | 4 | ||
AATCC | 5 | 5 | 2 | 3 | 5 |
List of Suppliers:
Diazo SkyBlue B ( Bayer Group )
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