4-Amino-3-[(4-amino-2-nitrophenyl)azo]-5-hydroxy-2,7-naphthalenedisulfonic acid disodium salt

CAS NO.：6222-42-0
Empirical Formula: C16H14N5NaO9S2
Molecular Weight: 507.42

What is 4-Amino-3-[(4-amino-2-nitrophenyl)azo]-5-hydroxy-2,7-naphthalenedisulfonic acid disodium salt?

Preparation

N-(4-amino-3-nitrophenyl)acetamide?diazo, and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?in acid conditions coupled, then acetaminophen hydrolysis.

Properties and Applications

navy blue. Soluble in water for dark purple, slightly soluble in alcohol in deep navy blue. In the dark for the strong sulfuric acid, diluted in red. In water solution to join strong hydrochloric acid into red; With strong sodium hydroxide solution into a navy blue.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
Standard	Light Fastness	Fading	Stain	Persperation Fastness	Fading	Stain	Fading	Stain
ISO	3	2-3	2-3	3-4	3		3-4

Safety information for 4-Amino-3-[(4-amino-2-nitrophenyl)azo]-5-hydroxy-2,7-naphthalenedisulfonic acid disodium salt

New Products

2-Amino-5-bromo-4-(trifluoromethyl)pyridine Sulfapyridine Fmoc-OSu (R)-(-)-2-Amino-1-propanol Cyclobutanone 5-bromo-4-fluoro-2-nitrobenzaldehyde β-Bromostyrene Ethyl 3-phenylpropanoate Phenethyl cinnamate Dipropyl disulfide N-Vinylformamide 4 pentyn 1 ol Methacrylate-PEG-Methacrylate, Mn:35000 2,4-Dihydroxyacetophenone 2-Chloro 5-Fluoro Pyridine Vasicinone 2-Chloroisonicotinic Acid Tween 80 or Polysorbate 80 2-Butyn-1-oL 2-Pentyn-1-oL 4-Nitrobenzotrifluoride N-(4-fluoro-2-methoxy-5-nitrophenyl)-4-(1-methyl-1H-indol-3-yl)pyrimidin-2-amine Pirtobrutinib intd. N-(4-Cyano-3-(trifluoromethyl)phenyl)-2-methyloxirane-2-carboxamide

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ALPHAZURINE A

disodium 4,5-diamino-9,10-dihydro-1,8-dihydroxy-9,10-dioxoanthracene-2,7-disulphonate

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ACID BLUE 62