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Direct Brown 78

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Company Name: Colorants Chem Private Limited  
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Products Intro: Product Name:Direct Brown 78
CAS:12262-19-0
Direct Brown 78 Basic information
Product Name:Direct Brown 78
Synonyms:Direct Brown 78;C.I.Direct Brown 78:C.I.40290
CAS:12262-19-0
MF:
MW:0
EINECS:
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Mol File:Mol File
Direct Brown 78 Structure
Direct Brown 78 Chemical Properties
Safety Information
MSDS Information
Direct Brown 78 Usage And Synthesis
Preparationin reflux conditions (or a little take pressure), in sodium hydroxide solution will be (E)-2-(2-sulfo-4-nitrostyryl)-5-nitrobenzenesulfonic acid with Sodium 4-aminobenzenesulfonate??diazotization?and Naphthalen-1-amine coupled with heating products. Reaction to the different proportion of material that get different commodity dye.
Properties and Applicationsred light brown. Soluble in water for orange brown, slightly soluble in alcohol. The strong sulfuric acid in blue light green light for black to black, diluted to olive brown for yellow light. The dye solution to join strong hydrochloric acid have yellow olive brown precipitation; Add thick sodium hydroxide solution for palm light orange.
Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 4 5 2-3 2-3
Direct Brown 78 Preparation Products And Raw materials
Raw materials4-Amino-benzenesulfonic acid monosodium salt-->1-Naphthylamine
Tag:Direct Brown 78(12262-19-0) Related Product Information
Direct Brown 7 C.I. Direct brown 75 DIRECT BROWN 74 6-Amino-3-[[4'-[[2,6-diamino-3-methyl-5-[(4-sulfophenyl)azo]phenyl]azo]-1,1'-biphenyl-4-yl]azo]-4-hydroxy-2-naphthalenesulfonic acid disodium salt Direct Brown 69 Direct Brown 73 C.I. Direct Brown 67 Direct Brown 70 4,4'-[(2-Methyl-5-sodiosulfo-1,3-phenylene)bis[azo(4,6-diamino-3,1-phenylene)azo]]bis[naphthalene-1-sulfonic acid sodium] salt