2,7-Naphthalenedisulfonic acid, 3-[(4-aminophenyl)azo]-4-hydroxy-5-[[(4-methylphenyl)sulfonyl]amino]-, disodium salt Usage And Synthesis

Preparation

(a) N-(3-aminophenyl)acetamide diazo, and 8-(4-Methylphenylsulfonamido)-1-naphthol-3,6-disulfonic acid coupling, hydrolysis acetyl groups; (b) 4-Nitrobenzenamine diazo, and 8-(4-Methylphenylsulfonamido)-1-naphthol-3,6-disulfonic acid coupling, and then will the nitro reduction.

Properties and Applications

red light blue. Soluble in water for red purple. The strong sulfuric acid for red, diluted the same color. In water solution to join strong hydrochloric acid for brick red; Add 10% sodium hydroxide solution for blu-ray red. The sun fastness medium.

2,7-Naphthalenedisulfonic acid, 3-[(4-aminophenyl)azo]-4-hydroxy-5-[[(4-methylphenyl)sulfonyl]amino]-, disodium salt(6441-95-8)Related Product Information

• sodium hydrogen -2-hydroxy-5-[[4-[[4-[(4-hydroxy-3-sulphonatophenyl)amino]phenyl](1-methyl-2-phenyl-1H-indol-3-yl)methylene]-2,5-cyclohexadien-1-ylidene]amino]benzenesulphonate
• ACID BLUE 183
• ACID BLUE 185
• UNIBLUE A SODIUM SALT
• Xanthylium, 9-(2-carboxy-3,6-dichlorophenyl)-3-[(4-ethoxyphenyl)amino]-6-[(4-ethoxysulfophenyl)amino]-, inner salt, monosodium salt
• ACID BLUE 161, PURE
• Chromate(3-), bis[4-(acetylamino)-5-(hydroxy-κO)-6-[2-[2,3,5-trichloro-6-(hydroxy-κO)phenyl]diazenyl-κN1]-1-naphthalenesulfonato(3-)]-, sodium hydrogen (1:2:1)
• ACID BLUE 20
• Acid blue 198