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ChemicalBook--->CAS DataBase List--->61724-04-7

61724-04-7

61724-04-7 Structure

61724-04-7 Structure
IdentificationBack Directory
[Name]

Acid Brown 21
[CAS]

61724-04-7
[Synonyms]

Brown BRL
Acid Brown 21
C.I.AcidBlack21
NEUTER BROWN BRL
C.I.Acid Brown 21
Polfalan Brown TLN
[Molecular Formula]

C19H18N4O5S
Raw materials And Preparation ProductsBack Directory
[Raw materials]

1-Acetamido-7-hydroxynaphthalene-->2-Aminophenol-4-Sulfonmethylamide-->3-Amino-4-hydroxybenzenesulphonamide-->1-(4-Chlorophenyl)-3-methyl-2-pyrazolin-5-one
Hazard InformationBack Directory
[Preparation]

3-Amino-4-hydroxy-N-methylbenzenesulfonamide diazo, and N-(7-hydroxynaphthalen-1-yl)acetamide coupling, and the other will be 3-Amino-4-hydroxybenzenesulfonamide diazo, and 1-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5(4H)-one?coupling, and then turn it into 1:2 chromium complex.
[Properties and Applications]

red light brown. Brown powder. The strong sulfuric acid for red sauce, diluted solution for red brown; No change in strong hydrochloric acid, diluted into shallow brown solution, and the precipitation; In the nitric acid for brown, sediment can dilute; In the thick of sodium hydroxide solution no change after dilute for brown. Water solution is brown. General for loose hair, tops and article polyamide, less used alone. Also used PVA fabric and dimension / cotton, wool / rayon blended fabric dyeing and printing, but also for leather dyeing.
Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 6-7 5 5 5 5 5 4-5 4-5
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