[2,6'-Bibenzothiazole]-7-sulfonic acid, 2'-[4-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]phenyl]-6-methyl-, disodium salt
- CAS NO.:5858-98-0
- Empirical Formula: C31H18N4Na2O7S4
- Molecular Weight: 732.73676
- EINECS: 611-715-8
What is [2,6'-Bibenzothiazole]-7-sulfonic acid, 2'-[4-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]phenyl]-6-methyl-, disodium salt?
Preparation
p-Methylaniline (2 Moore) and sulfur (4.5 atomic ratio) in 200 ~ 280 ° C heat, with hair smoke from the sulphonated sulfuric acid alkali primrose spirit. The product diazo, and 6-Hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications
yellow light pink to red yellow light. Soluble in water for orange red. The strong sulfuric acid for blood-red, after diluted orange precipitation. The dye solution to join strong hydrochloric acid have orange precipitation; Add thick dark sodium hydroxide solution.
Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
Fading | Stain | Fading | Stain | ||||
ISO | 4 | 1-2 | 2-3 | 1 |
Safety information for [2,6'-Bibenzothiazole]-7-sulfonic acid, 2'-[4-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]phenyl]-6-methyl-, disodium salt
Related products of tetrahydrofuran
Direct red 72
C.I. Direct red 74
BENZOPURPURIN 10B
Direct Red 69
disodium 4-amino-3-[[4'-[(2-amino-6-sulphonatonaphthyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-1-sulphonate
4-Amino-3-[[4'-[(2,4-dihydroxyphenyl)azo]-3,3'-dimethyl-1,1'-biphenyl-4-yl]azo]-1-naphthalenesulfonic acid sodium salt
7-[[[[4-(Acetylamino)phenyl]amino]carbonyl]amino]-4-hydroxy-3-[(2-methylphenyl)azo]-2-naphthalenesulfonic acid sodium salt
7-[[[[4-(Acetylamino)phenyl]amino]carbonyl]amino]-4-hydroxy-3-[(2-methoxyphenyl)azo]-2-naphthalenesulfonic acid sodium salt
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