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Direct Black 24

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Direct Black 24 Basic information
Product Name:Direct Black 24
Synonyms:Direct Black 24;C.I.Direct Black 24:C.I.31925
CAS:
MF:
MW:0
EINECS:
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Mol File:Mol File
Direct Black 24 Structure
Direct Black 24 Chemical Properties
Safety Information
MSDS Information
Direct Black 24 Usage And Synthesis
Preparation3,3′-Dimethylbenzidine double nitriding, first with 8-Aminonaphthalene-2-sulfonic acid coupling, product to diazo, and 4,5Dihydroxynaphthalene-1-sulfonic acid (2 Moore) coupled.
Properties and Applicationsblack. Soluble in water for dark purple, soluble in ethanol. The strong sulfuric acid for blue, shallow purple for diluted. The dye solution to join strong hydrochloric acid have dark purple precipitation; Add thick sodium hydroxide solution have dark purple precipitation.
Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4-5 1 3 1-2 2-3
Direct Black 24 Preparation Products And Raw materials
Raw materials1-Naphthylamine-7-sulfonic acid-->4,5-dihydroxynaphthalene-1-sulphonic acid-->O-Tolidine
Tag:Direct Black 24 Related Product Information
2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt 2-Naphthalenesulfonic acid, 6-(2,4-diaminophenyl)azo-3-4-(2,4-diaminophenyl)azo-3-sulfophenylazo-4-hydroxy-, disodium salt Direct Black 22:1 3,3'-[1,1'-Biphenyl-4,4'-diylbis(azo)]bis(6-amino-4-hydroxynaphthalene-2-sulfonic acid sodium) salt Direct Black 27 2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-[[4'-[[4-hydroxy-2-(phenylamino)phenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-, disodium salt 6-Amino-4-hydroxy-3-[[4-(phenylazo)-1-naphtyl]azo]-2-naphthalenesulfonic acid sodium salt 4-Amino-6-[(4-aminophenyl)azo]-3-[[4'-[[5-[(4-aminophenyl)azo]-2,4-diaminophenyl]azo][1,1'-biphenyl]-4-yl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt 4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt
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