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Direct Black 24

Direct Black 24 Structure
Direct Black 24 structure
CAS No.
Chemical Name:
Direct Black 24
Synonyms
Direct Black 24;C.I.Direct Black 24:C.I.31925
CBNumber:
CB09702901
Molecular Formula:
Molecular Weight:
0
MDL Number:
MOL File:
Mol file
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Direct Black 24 Chemical Properties,Uses,Production

Preparation

3,3′-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 Applications

black. 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 materials

1-Naphthylamine-7-sulfonic acid 4,5-dihydroxynaphthalene-1-sulphonic acid O-Tolidine

Preparation Products

(Direct Black 24)Related Search:

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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Direct Black 24 C.I.Direct Black 24:C.I.31925