Preparation
3-Amino-5-chloro-2-hydroxybenzenesulfonic acid diazo, and 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one coupling, and then in water solution and formic acid chromium heating, in 125 ° C keep 30 to 40 minutes to form chromium complex.
Properties and Applications
red. Soluble in water, ethanol, acetone, insoluble in toluene. The strong sulfuric acid in the dark for the light yellow. In nitric acid for yellow in red.
Standard
|
Light Fastness
|
Soaping
|
Persperation Fastness
|
Oxygen bleaching
|
Fastness to seawater
|
Fading
|
Stain
|
Fading
|
Stain
|
Fading
|
Stain
|
ISO
|
6
|
3-4
|
4
|
5
|
3
|
|
4
|
|
AATCC
|
6
|
3
|
3
|
4-5
|
3
|
|
3-4
|
|