Direct Blue 158
Name:C.I.Direct Blue 158,C.I.24555
Molecular Structure: Double azo class
Molecular Formula:C50H36N6Na4O16S2
Molecular Weight: 1132.94
CAS Registry Number:6655-95-4
Manufacturing Methods : 2-[2-Amino-5-[4-amino-3-(carboxymethoxy)phenyl]-phenoxy]acetic acid double nitriding, and 4-Hydroxy-7-(4-methoxyphenylamino)naphthalene-2-sulfonic acid (2 Moore) coupled.
Properties and Applications: dark blue. Dark grey powder. Soluble in water, slightly soluble in alcohol. The strong sulfuric acid dyes for blue, diluted into purple, have precipitation. The dye water solution is colourful blue, join after strong hydrochloric acid is still bright blue, accompanied by precipitation; Add thick sodium hydroxide solution to deep purple, have precipitation. Copper ions in dyeing color shade basically unchanged, iron ion in the green light and dark. Used for cotton, viscose and their blended fabric, silk, leather and paper dyeing and printing
Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
Fading | Stain | Fading | Stain | ||||
ISO | 3-4 | 4 | 6 | 4 | 4-5 | ||
AATCC | 3-4 | 5 | 2-3 | 1-2 | 3 |
List of Suppliers:
ACDI Brilliant Blue 2-BL 400% (Aakash Chemicals & Dyestuffs Inc)
Benzo Cuprol Blue FBL( Bayer Group )
Cuprophenyl Brill Blue 2BL(Classic Dyestuffs Inc)
Intramet Brilliant Blue 2BL(Classic Dyestuffs Inc)
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