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Tianjin Jufaxiang Dye Technology Co., Ltd
Tianjin Jufaxiang Dye Technology Co., Ltd
13 YRS
Tianjin, China
Main Products:
Auramine O / Direct Black 112 / Direct Brown 1 / Direct Black 154 / Direct Black 38 / Direct Red 13 / Direct Yellow 12 / Direct Red 23 / Direct Orange 39 / Remastral Blue FFRL / Acid Red 18 / Naphthol Blue Black / Methylene Blue
Tianjin, China
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Direct Black EX / CAS 1937-37-7
OVERVIEW
Packaging
25 KG/Fibre Drum
Lead Time
14-30 days
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DESCRIPTION
Direct Black EX
Dyeing depth | Dye name | International Index | Light fastness | Fastness to water | Soaping fastness | Fastness to perspiration | Rubbing fastness | Ironing | ||
acid | alkali | dry | wet | |||||||
3 | Direct Black EX | B-38 | 3 | 3-4 | 3 | 3-4 | 1-2 | 3 | 3-4 | 3-4 |
Typical Properties
Summary
It is mainly used for the dyeing of cotton, hemp, viscose and other cellulose fibers, silk, nylon and their blended fabrics, leather, biology and wood, plastics and raw materials for red ink.
CAS No.
1937-37-7
Formula
C34H25N9Na2O7S2
Molecular Mass
781.72800
Exact Mass
781.11100
PSA
303.61000
Logp
11.91860
IUPAC
disodium;4-amino-3-[[4-[4-[(2,4-diaminophenyl)diazenyl]phenyl]phenyl]diazenyl]-5-hydroxy-6-phenyldiazenylnaphthalene-2,7-disulfonate
SMILES
C1=CC=C(C=C1)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC4=CC=C(C=C4)C5=CC=C(C=C5)N=NC6=C(C=C(C=C6)N)N)N)O.[Na+].[Na+]
Attribute classification
Matter Classification
organic
Category
Dyestuffs and Pigments > Direct Dyes
Chemical and Physical Properties
Melting Point
109-110°C
Density
1.61g/cm3
Appearance
Brown black powder
Export information
HS Code
32041400
Export Rebate
0%
Export Formalities
A,B
R,S
UN No.
0.0
DG-Class
0.0
Risk Code
45-63-36
Safety Label
T
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