Basic information Safety Supplier Related
ChemicalBook >  Product Catalog >  Dyes and Pigments >  dye >  Direct Dyes >  Direct Blue 71

Direct Blue 71

Basic information Safety Supplier Related

Direct Blue 71 Basic information

Product Name:
Direct Blue 71
Synonyms:
  • C.1.DirectBlue71(34140)
  • C.I.Directblue71
  • DiazolLightBlueR
  • DirectdeepblueL-3RB
  • DirectfastblueB2RL
  • DurazolBlue2R
  • SiriusSupraBlueBRR
  • SumilightSupraBlueBRR
CAS:
4399-55-7
MF:
C40H28N7NaO13S4
MW:
965.93
EINECS:
224-531-4
Product Categories:
  • Organics
  • Dyes and Pigments
  • D
  • Stains and Dyes
  • Stains&Dyes, A to
Mol File:
4399-55-7.mol
More
Less

Direct Blue 71 Chemical Properties

storage temp. 
Refrigerator
solubility 
DMSO (Slightly, Sonicated), Methanol (Slightly, Sonicated)
Colour Index 
34140
form 
Powder
color 
Black
CAS DataBase Reference
4399-55-7(CAS DataBase Reference)
EPA Substance Registry System
C.I. Direct Blue 71 (4399-55-7)
More
Less

Safety Information

Safety Statements 
24/25
WGK Germany 
3
HS Code 
32041400

MSDS

More
Less

Direct Blue 71 Usage And Synthesis

Chemical Properties

black powder

Uses

Direct blue 71 (CAS# 4399-55-7) is an organic triazo dye and a water-soluble pollutant. The decolourization of aqueous solutions of direct blue 71 has been achieved using a variety of methods, such as the use of Au-Nx-TiO2 nanospheres to achieve its photocatalytic degradation. Dyes and metabolites.

Preparation

3-Aminonaphthalene-1,5-disulfonic acid diazo, and Naphthalen-1-amine first coupling, its product to diazo, and 8-Aminonaphthalene-2-sulfonic acid second coupling, again diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid third coupling.

Properties and Applications

dark blue. Blue gray powder. Soluble in water for blue, solubility of 10 g/L (60 ℃), 20 g/L (97 ℃), slightly soluble in soluble fiber element, soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for blue to to black, red after diluted purple precipitation. Dye with strong hydrochloric acid solution for blue precipitation; Add thick sodium hydroxide solution for red light purple, have precipitation. Cellulose fiber of dyeing, dye devoured the gender is good, the temperature in the 80-100 ℃, affinity is the largest. Discharge sex is very good. In dye bath of copper ions in tiny change color (4 ~ 5 level), meet iron ion colored light basically unchanged (level 5). SDC classification for a class B. Cotton neutral white was a category 4, viscose neutral white for 4 ~ 5 level, cotton and viscose alkaline white are 5 levels. Widely used in viscose fiber dyeing, also used in viscose/PVA blends, cotton, and the carpet of dyeing and printing. Also used in leather, paper, soap, cheese, protein and formaldehyde resin color.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 4-5 5 2 2
AATCC 2 4 4-5 1-2 2

Direct Blue 71Supplier

J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Email
jkinfo@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Email
market03@meryer.com
Energy Chemical
Tel
021-021-58432009 400-005-6266
Email
sales8178@energy-chemical.com
Winchem Industrial Co. Ltd
Tel
0574-83851061
Email
info@win-chemical.com
Tianjin heowns Biochemical Technology Co., Ltd.
Tel
400 638 7771
Email
sales@heowns.com