Indigo powder

Indigo powder

CAS No.:482-89-3
Molecular Formula: C16H10N2O2
Molecular Weight: 262.62
Active ingredient:color scale
Content:85
Detection method:UV
Use: Mainly used in the dyeing of cotton yarns, cotton cloth, wool and silk; pure products are used in the dyeing of food; or processed into organic 
Packaging:cardboard drums, with double aseptic food poly bags inside. Or by cartons, with vacual aseptic food poly bags inside, 20kgs per carton with 8 bags inside,2.5kg per bag.
Product description:
We can see dark blue powder with our naked eyes.It is water-fast. It is absolute a natural pigment abstracted from the leaves of Polygomum tinctorium Lour e.g.  blue Polygonum,blue tea, Strobilanthes cusia, woad by modern biotechnology.Widely used in every kinds of textile dyeing as blue coloring.Indigo is very popular with people for thousands of years as the rich color and the fastness.

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