1.High quality 2.Competitive price 3.mainly used for dyeing cotton yarn, cotton, wool or silk

1.High quality 2.Competitive price 3.mainly used for dyeing cotton yarn, cotton, wool or silk

Indigo Powder

1.Description: The product is of dark blue even granules, able to rapidly disperse in water, soluble in hot aniline solution. In concentrated sulfuric acid, it appears yellowish green and after diluted, it produces the blue-colored precipitate. When heated to 170° C, it begins to sublinate and convent it purple-colored fume without decomposition. The leuco compound presents light yellow color after the alkaline reduction.

2.Specification

Items	Specifications
Appearance	Dark blue even powder
Content	94%min
Particle size(60 mesh)	95%min
Moisture	0.5%max
Fe3+	300ppm max

3.

Uses: mainly used for dyeing cotton yarn, cotton, wool or silk. Pure food dyes used in the system, or processed into organic pigments. Vat dyes are insoluble in water, ethanol and ether, phthalic anhydride in the melt can be.4

Packaging: 25KG iron drum, 1KG tin packaging, can also be users.

Indigo Powder