The most popular Indigo Blue for dyeing denim
Product Specification
| Name | Indigo Blue |
| Other Names | Vat Blue 1 |
| CAS No. | 482-89-3 |
| EINECS No. | 207-586-9 |
| MF | C16H10N2O2 |
| STRENGTH | 94% |
| APPEARANCE | Blue Granular |
| APPLICATION | Used for dyeing Cotton yarn, Jeans ,Denim and so on. |
| PACKING | 25KGS Bag/Jumbo Bag |
Description
Indigo Blue has the following characteristics: 1. Uniform particles, no dust ；2. Fast dissolution, good dispersion effect, no impurity floating and precipitation；3. Complete oxidation after coloring, fast speed, high color fastness, more gradient effects;4.The frequency of cleaning the dye tank is reduced, which can greatly reduce the environmental pollution and sewage treatment cost of cleaning the dye tank.
Product character
Indigo blue is slightly soluble in ethanol, glycerin and propylene glycol, insoluble in oils and fats. The 0.05% aqueous solution was dark blue. 1g is soluble in about 100ml, water at 25 ° C, the solubility in water is lower than other edible synthetic pigments, and the 0.05% aqueous solution is blue. Soluble in glycerin, propylene glycol, slightly soluble in ethanol, insoluble in oil. In case of concentrated sulfuric acid, it is dark blue, and after dilution, it is blue. Its aqueous solution plus sodium hydroxide is green to yellowish green. Indigo is easy to color, has a unique color tone, and is widely used. Heat resistance, light resistance, alkali resistance, oxidation resistance, salt tolerance and bacterial resistance are both poor. Fading when reducing, such as reduction with sodium sulfoxylate or glucose, it becomes white. The maximum absorption wavelength is 610 nm ± 2 nm.
Application
Used for dyeing Cotton yarn, Jeans ,Denim,Wool and so on
Packing
25KGS Bag/ Jumbo Bag
Storage & Transportation
Indigo blue 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.
