Vat orange 2 appearance is generally dark red powder. It is insoluble in water; soluble in tetralin and xylene, yellow in xylene (slightly green fluorescent), blue in concentrated sulfuric acid, yellow after dilution. The leuco body formed in the powder solution is red and green, and the acid powder solution is orange.
Usage
- Vat orange 2 is suitable for cotton products when dyeing or dip dyeing. It is also applicable to method A. It can also be used in method B. When using method B, the amount of caustic soda is increased by 15% compared with the original amount. Dry cylinder recovery takes 10~15min. The reduction temperature is 60 ° C, and the drying time of the dry cylinder is 25 min. In addition to the dyeing and dip dyeing, it is also suitable for suspension padding.
- It leuco body has higher affinity to cotton fiber, and the leveling property is better. The ability to cover dead cotton is poor. Soaking must be strengthened after dyeing. hair color.
- It is suitable for direct printing, but it does not need strong alkali to modulate the printing paste. The steaming time will prolong the color light and turn yellow. When oxidizing, it is better to use sodium perborate or hydrogen peroxide, such as dichromate will dim the color. Poor whitening performance, not suitable for discharge printing.
- It can dye medium and dark color of viscose fiber products, and the dyeing temperature can be appropriately increased according to method A (or method B). It is still suitable for dyeing of nylon and vinylon, and the color yield on vinylon is lower than that. Cotton, the shade is also slightly darker.
- It printing and dyeing fabric is finished by resin, the color has a slight yellowing.
Technical Specifications
- Product Name:Golden Orange 2RT(Vat Orange 2)
- C.I. No.: 59705
- CAS No.: 1324-35-2
- Molecular Formula: C30H12Br2O2
- Molecular Weight: 564.22
- Shade: Yellow Orange
- Relative name:Vat Golden Orange 2RT;Vat Orange RRT;Orange 2RT;
Dyeing depth g/L | 20 |
Dyeing method | IN IW |
Leuco color | Violet(R) |
Leveling property | ▲▲ |
Dead cotton | ▲ |
Light (Xenon test 1/12) | 4 |
Light (Xenon test 1/1) | 5-6 |
Light (Xenon test 2/1) | 6-7 |
Precautions
- Vat orange 2 has light brittleness, so it is less used in dyeing or printing, and is limited to color matching.
- It dyeing should be protected from light, such as direct sunlight, can not get the desired color.
- It should be stored in a dry, ventilated place to avoid moisture.
