deep green light brown to dark brown. Soluble in hot water for yellow brown, slightly soluble in ethanol and Acetone. In concentrated sulfuric acid for brown light orange to red, dilution have orange precipitation; In concentrated nitric acid for orange solution; In concentrated hydrochloric acid in almost insoluble; In a dilute sodium hydroxide solution for red solution.
|
Standard
|
Ironing Fastness
|
Light Fastness
|
Fulling
|
Persperation Fastness
|
Soaping
|
Water
|
|
Alkali
|
Acid
|
|
ISO
|
4-5
|
4
|
4-5
|
3-4
|
2
|
4-5
|
5
|
