Preparation
4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazo, and 3-Hydroxy-N-o-tolyl-2-naphthamide coupling, and then translate into 1:2 chromium winding things up.
Properties and Applications
blue ash. Soluble in water for blue-ray gray, soluble in ethanol for green light gray. The strong sulfuric acid in turquoise, diluted for purple. In water solution to join hydrochloric acid into green gray; Add sodium hydroxide for blue gray.
Standard
|
Light Fastness
|
Soaping
|
Persperation Fastness
|
Oxygen bleaching
|
Fastness to seawater
|
Fading
|
Stain
|
Fading
|
Stain
|
Fading
|
Stain
|
ISO
|
7
|
4-5
|
4-5
|
5
|
|
|
|
|