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HomeProduct name list4-[[4-[[[4-[(3-Carboxy-4-hydroxyphenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylic acid disodium salt

4-[[4-[[[4-[(3-Carboxy-4-hydroxyphenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylic acid disodium salt

4-[[4-[[[4-[(3-Carboxy-4-hydroxyphenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylic acid disodium salt Structural

What is 4-[[4-[[[4-[(3-Carboxy-4-hydroxyphenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylic acid disodium salt?

Preparation

4-Nitrobenzenamine diazo, coupled with 2-Hydroxybenzoic acid, will the nitro reduction, and 4-Amino-N-(4-aminophenyl)benzamide?condensation , then the nitro reduction, and then diazo, and 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one? coupling.

Properties and Applications

red light yellow. Moderate soluble in water for golden brown, soluble in ethanol. The strong sulfuric acid for gold in orange, for yellow brown after diluted. The dye solution to join strong hydrochloric acid for golden brown, precipitation; Add thick sodium hydroxide solution for gold orange.

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

Safety information for 4-[[4-[[[4-[(3-Carboxy-4-hydroxyphenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylic acid disodium salt

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