tetrasodium 3-[[4-[[[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]-3-sulphonatophenyl]amino]carbonyl]amino]-2-sulphonatophenyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulphonate

tetrasodium 3-[[4-[[[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]-3-sulphonatophenyl]amino]carbonyl]amino]-2-sulphonatophenyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulphonate Basic information

Product Name:	tetrasodium 3-[[4-[[[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]-3-sulphonatophenyl]amino]carbonyl]amino]-2-sulphonatophenyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulphonate
Synonyms:	tetrasodium 3-[[4-[[[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]-3-sulphonatophenyl]amino]carbonyl]amino]-2-sulphonatophenyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulphonate;6-Amino-4-hydroxy-5-[[4-[N'-[4-[(1-hydroxy-6-(phenylamino)-3-sodiosulfo-2-naphthalenyl)azo]-3-sodiosulfophenyl]ureido]-2-sodiosulfophenyl]azo]naphthalene-2-sulfonic acid sodium salt;C.I.25385;C.I.Direct Violet 6;C.I.Direct Violet 6:C.I.25385;Direct Violet 6;tetrasodium 3-[[4-[[[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]-3-sulphonatophenyl]amino]carbonyl]amino]-2-sulphonatophenyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulphonate
CAS:	6771-82-0
MF:	C39H26N8Na4O15S4
MW:	1066.88742
EINECS:	2298303
Product Categories:
Mol File:	6771-82-0.mol

Safety Information

MSDS Information

Preparation

1,3-Bis(4-amino-3-sulfophenyl)urea double nitriding, first in acid conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid?coupled, then in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications

red light purple. Soluble in water for product red, slightly soluble in alcohol. The strong sulfuric acid for red sauce, diluted for purple. The dye solution to join strong hydrochloric acid for purple, have precipitation; Add thick Red sauce sodium hydroxide solution for wine Red, have precipitation.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3	4	4	1-2		2

Raw materials

3,3'-(carbonyldiimino)bis[6-aminobenzenesulphonic] acid-->6-Amino-4-hydroxy-2-naphthalenesulfonic acid-->7-Anilino-4-hydroxy-2-naphthalenesulfonic acid

[1,1'-Biphenyl]-3,3'-dicarboxylicacid,4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-4'-[2-(1-hydroxy-5-sulfo-2-naphthalenyl)diazenyl]-,sodium salt (1:4) 2-Naphthalenesulfonic acid, 7-[(4-aminobenzoyl)amino]-3-[[4-[(2,4-dimethyl-6-sulfophenyl)azo]-2-methoxy-5-methylphenyl]azo]-4-hydroxy-, disodium salt SIRIUS SUPRA RED VIOLET B Naphtho[2,1-d]thiazole-8-sulfonic acid, 2-(4-aminophenyl)-7-[[4-[(4-chloro-2-sulfophenyl)azo]-2,5-dimethylphenyl]azo]-6-hydroxy-, disodium salt Naphtho[2,1-d]thiazole-8-sulfonic acid, 2-(4-aminophenyl)-7-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]-6-hydroxy-, disodium salt 7-Benzoylamino-4-hydroxy-3-[[2-methoxy-4-[(4-sodiosulfophenyl)azo]phenyl]azo]naphthalene-2-sulfonic acid sodium salt DIRECT VIOLET 66 7-(Benzoylamino)-4-hydroxy-3-[[2-methoxy-5-methyl-4-[(4-sulfophenyl)azo]phenyl]azo]-2-naphthalenesulfonic acid disodium salt DIRECT VIOLET 7

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tetrasodium 3-[[4-[[[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]-3-sulphonatophenyl]amino]carbonyl]amino]-2-sulphonatophenyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulphonate

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