blue ash. Blue-black powder. The strong sulfuric acid for red purple, pink to purple solution diluted; No change in strong hydrochloric acid, after dilution is light blue solution and accompanied by precipitation; In nitric acid for brown, diluted is shallow brown; No change in sodium hydroxide solution, diluted solution for blue. Water solution is blue light gray.
|
Standard
|
Light Fastness
|
Soaping
|
Persperation Fastness
|
Oxygen bleaching
|
Fastness to seawater
|
|
Fading
|
Stain
|
Fading
|
Stain
|
Fading
|
Stain
|
|
ISO
|
6-7
|
4-5
|
5
|
5
|
4
|
5
|
5
|
5
|
