sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate

sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate 화학적 특성, 용도, 생산

• 제조 방법

  5-Aminonaphthalene-1-sulfonic acid diazo, and Naphthalen-2-ol coupling.

• Properties and Applications

  red. Soluble in hot water for red, slightly soluble in cold water and ethanol. The strong sulfuric acid to red light purple, diluted precipitation is brown; In nitric acid solution for yellow brown; In a dilute sodium hydroxide solution for yellow brown solution. In water solution to join hydrochloric acid with brown precipitation; Add sodium hydroxide solution to become yellow.
  

  Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
  		Fading	Stain		Fading	Stain	Fading	Stain
  ISO	2-3	2	1	3	1	1	2	3

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