1H-Pyrazole-3-carboxylic acid, 4,4'-[carbonylbis[imino(2-sulfo-4,1-phenylene)iminocarbonyl-4,1-phenyleneazo]]bis[1-(3-aminophenyl)-4,5-dihydro-5-oxo-, tetrasodium salt

CAS NO.：6791-54-4
Empirical Formula: C47H37N14NaO15S2
Molecular Weight: 1125.01
EINECS: 614-167-8

What is 1H-Pyrazole-3-carboxylic acid, 4,4'-[carbonylbis[imino(2-sulfo-4,1-phenylene)iminocarbonyl-4,1-phenyleneazo]]bis[1-(3-aminophenyl)-4,5-dihydro-5-oxo-, tetrasodium salt?

Preparation

1,3-Bis(4-(4-aminobenzamido)-3-sulfophenyl)urea double nitriding, and 1-(3-Nitrophenyl)-3-carboxy-5-pyrazolone (2 Moore) coupling, and then will the nitro reduction for amino.

Properties and Applications

yellow light orange. Soluble in water for gold orange, soluble in ethanol. The strong sulfuric acid for green light yellow, diluted is shallow orange. The dye solution to join strong hydrochloric acid is palm light orange, precipitation; Add thick sodium hydroxide solution for green light yellow.

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

Safety information for 1H-Pyrazole-3-carboxylic acid, 4,4'-[carbonylbis[imino(2-sulfo-4,1-phenylene)iminocarbonyl-4,1-phenyleneazo]]bis[1-(3-aminophenyl)-4,5-dihydro-5-oxo-, tetrasodium salt

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