Preparation
(a) in the presence of Pyridine , with Chlorosulfonic acid treatment C.I. Vat Green 2 leuco; (b) in the Pyridine with metal (such as copper, iron, zinc, etc) and Sulfur trioxide source (such as Sulfur trioxide, Chlorosulfonic acid or Methyl chlorosulfonate, etc.) processing C.I. Vat Green 2. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.
Properties and Applications
brilliant green. Red brown powder. Soluble in water, solubility is better. Can be used for cotton fiber dyeing and calico printing, used for direct printing, resist printing. Also can be used for wool, silk, polyester/cotton blended fabric dyeing.
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Standard
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Ironing Fastness
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Chlorine bleach
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Light Fastness
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Mercerized
|
Oxygen bleach
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Soaping
|
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Fading
|
Stain
|
|
ISO
|
3
|
3
|
6-7
|
4-5
|
4-5
|
5
|
4
|
|
AATCC
|
5
|
4
|
6-7
|
4-5
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4-5
|
|
|
