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Indigo LK(Granular) |
| Color index number： |
C.I.Vat Blue 1 |
| Structure Formular： |
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| Molecular Formula： |
C16H10O2N2 |
| 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. |
| Uses： |
It is mainly used for the dyeing of cotton yarn and fabrics. For instance, the internationally popular Blue Jeans are cross-woven mostly with the indigo-dyed yarn and white yarn. It can also be used for the dyeing of wool and silk, therefore, a certain quantity of indigo is consumed in carpet and handicrafts making. |
| Main Specifications： |
Items |
Specification |
Content (%) |
≥95 |
Moisture (%) |
≤1.0 |
Lonic iron (ppm) |
≤500 |
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| Packing： |
20kg woven plastic bags, or carton boxes sealed with plastic film, inside two plastic containing 10kg product each. |
| Features： |
Compared ith powdery indigo, the indigo LK has many advantages:
1. reduce dust pollution
2. better hydrophilicity
3. more brilliant
4. higher degree of dyeing
5. lower consumption of sodium hydrosulphiteang caustic soda
6. de-crease residue amount after reducing
7. lower ionic content. |
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