Direct Brown 78

Direct Brown 78 structure

CAS No.: 12262-19-0

Chemical Name:: Direct Brown 78

Synonyms: Direct Brown 78;C.I.Direct Brown 78:C.I.40290

CBNumber:: CB29702970

Molecular Formula:

Molecular Weight:: 0

MDL Number:

MOL File:: Mol file

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Direct Brown 78 Chemical Properties,Uses,Production

Preparation

in 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 Applications

red 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 materials

4-Amino-benzenesulfonic acid monosodium salt 1-Naphthylamine

Preparation Products

Direct Brown 78 Suppliers

Global( 1)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Colorants Chem Private Limited	--		India	102	58

Supplier	Advantage
Colorants Chem Private Limited	58

12262-19-0(Direct Brown 78)Related Search:

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

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Direct Brown 78 C.I.Direct Brown 78:C.I.40290 12262-19-0