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Introduction:1)Cas.No.482-89-3 2)Strength:above94% 3)C.I.No.:Vat blue 1 4)PH Range:9.5-10.5
Detail information  

Fabric Tie Dye Dark Blue Color Indigo Blue


1.Indigo blue powder or granular 94%

1)We are the biggest manufacturer of disperse dyes,the second biggest manufacturer of     reeactive dyes and sodium hydrosulfite, and specializing in manufacture of indigo blue,
sulphur black, vat dyes, basic dyes,  direct dyes and OBA

2.Indigo BLue (Vat Blue dyes)

Molecular Formula: C16H10N2O2
Colour Index: C.I. Vat Blue 1
Cas No. 482-89-3
Composion: Phenylethane acid potassium salt reacts to amino sodium through
alkali fusion, and then oxidized.

Appearance: Dark blue even Granular and Powder
Shade: To the similar standard of the factory
Moisture%:0.45 Max
Particle size(-60 mesh)%: 95
Fe3:200ppm Max

3.Properties of indigo:It is insoluble in water and alcohol.It is soluble in hot Aniline.


4.Detailed informations of indigo as following:


5.Use of indigo:

It is mainly used to dye cotton fibre .The pop "cowboy" clothes mostly are made 
by indigo blue dying longitudinal yarn and white yarn interweaving;
It can be used with sulfurated coloring matter;Also we can get indigo white,
bromized indigo blue from it,they are well used in food coloring matter,biochemistry etc. 

6.Packages of indigo

25KG Plastic-Woven Bag with double polyester liner
20KG Carton with double polyester liner
20KG/15KG Iron Drum with double polyester liner

7.Storage & Transportation of indigo:

The product must be stored in shade, dry & well-ventilated warehouse. Avoid to be
contacted with oxidizing chemicals and combustible organic substances.
Keep it away from direct sunlight, heat, sparks and open flames. Carefully handle the
product and avoid damaging the package.
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