ACID RED 183

dark rust crystalline powder

3-Amino-5-chloro-2-hydroxybenzenesulfonic acid diazo, and 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone coupling, and then in water solution and formic acid chromium heating, in 125 ° C keep 3 hours, make the generation of the chrome complex.

Not classified

red yellow light. Soluble in water is red. The strong sulfuric acid to red light yellow; Diluted into orange. In water solution to join 10% of sulfuric acid slightly change to blue; Add 10% sodium hydroxide solution into orange. Apply to wool dyeing and leather color.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	7	3-4	4	4	2		3
AATCC	6-7	2	2	5			5