2-Hydroxy-5-[[4'-[(1,6-dihydroxy-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]benzoic acid sodium salt

CAS NO.：6797-93-9
Empirical Formula: C29H21N4NaO8S
Molecular Weight: 608.56

What is 2-Hydroxy-5-[[4'-[(1,6-dihydroxy-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]benzoic acid sodium salt?

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, respectively with 2-Hydroxybenzoic acid and 4,7-Dihydroxynaphthalene-2-sulfonic acid?coupling.

Properties and Applications

blue-ray red. Soluble in water for red, moderate soluble in alcohol is palm red light orange to orange. In the dark for the strong sulfuric acid, diluted for Shallow red time The dye solution to join strong hydrochloric acid for brown, have precipitation; Add thick sodium hydroxide solution have red precipitate.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3-4	5	3	1-2		1-2

Properties of 2-Hydroxy-5-[[4'-[(1,6-dihydroxy-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]benzoic acid sodium salt

EPA Substance Registry System

C.I. Direct Red 52 (6797-93-9)

Safety information for 2-Hydroxy-5-[[4'-[(1,6-dihydroxy-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]benzoic acid sodium salt

Computed Descriptors for 2-Hydroxy-5-[[4'-[(1,6-dihydroxy-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]benzoic acid sodium salt

New Products

ALUMINIUM IODIDE 100 GM BUFFER CAPSULE PH 7.0 - 10 CAP BUFFER SOLUTION PH 9.5 (BORATE) EZEE BLUE GEL STAINER BORAX CARMINE (GRENACHERS ALCOHOLIC) POTASSIUM IODATE - IODIDE SOLN 0.1 N Dabigatran Acyl-O3-D-Glucuronide Trifluoroacetic Acid Salt Isofolic Acid Dabigatran 2-O-acylglucuronide metabolite Dabigatran Acyl-?-D- glucuronide Trifluroacetic Acid Erythromycin EP Impurity A Desloratidine Related Compound A

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Direct Red 45

2-Naphthalenesulfonic acid, 7-[(2,4-dihydroxyphenyl)azo]-3-[[3-[(2,4-dihydroxyphenyl)azo]phenyl]azo]-4-hydroxy-, monosodium salt

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