purple. Blue gray powder. Insoluble in water, soluble in 1, 2, 3, 4 – Tetrahydronaphthalene, Xylene and Pyridine . In concentrated sulfuric acid for brown light red, and then into a green, green to yellow, purple precipitation after dilution in sulfuric acid and boric acid solution for brilliant blue green, to blue. Alkaline reduction leuco for red brown; Acid reduction leuco for dark red light purple. Used for dyeing cotton fabric is purple, to cotton affinity and levelness were good. Also applies to viscose, silk and wool dyeing.
Standard
|
Ironing Fastness
|
Chlorine bleach
|
Light Fastness
|
Mercerized
|
Oxygen bleach
|
Soaping
|
Fading
|
Stain
|
ISO
|
3
|
3
|
6-7
|
3
|
4
|
4-5
|
5
|
AATCC
|
3
|
3
|
7
|
4
|
3-4
|
|
|