Brown. Soluble in water. In concentrated sulfuric acid for orange brown, and Sulfur dioxide escaping, dilution after precipitation; In the Sodium hydroxide solution for orange; In the Sodium sulfide solution for orange.
|
Standard
|
Acid Resistance
|
Alkali Resistance
|
Light Fastness
|
Fulling
|
Persperation Fastness
|
Soaping
|
|
Moderate
|
Severe
|
|
ISO
|
3
|
4
|
3-4
|
4
|
5
|
4
|
4
|
|
AATCC
|
3-4
|
5
|
4
|
4
|
|
4-5
|
|