0102030405
Direct Red 12B For Dyeing Cotton
Product Specification
Name |
Direct Red 12B |
Other Name |
Direct Red 31 |
Cas No. |
5001-72-9 |
Appearance |
Reddish Brown Powder |
Packing |
25kgs Kraft bag/carton box/Fiber drum |
Strength |
100% |
Application |
Used for dyeing cotton,paper,leather,silk and wool so on. |
Product Description
Direct Red 12B Reddish brown powder. Water solubility is still good, the aqueous solution is blu-red, adding concentrated hydrochloric acid to produce jujube red precipitation, adding concentrated alkali to orange brown. Soluble in ethylene glycol ether, slightly soluble in ethanol, reddish orange, insoluble in other organic solvents. It is orange to brown in concentrated sulfuric acid, and produces dark blue-red precipitate after dilution; It is a brown solution in concentrated nitric acid and precipitates. Insoluble in concentrated alkali; Jujube red in concentrated ammonia.
Product character
Direct Red 31 is popular choices among textile manufacturers due to their excellent light fastness and wash fastness. This means that the colors produced by direct red 12B will remain bright and vibrant even after prolonged exposure to sunlight and multiple washes, providing a long-lasting finish to textiles and fibers.
In addition to their excellent color properties, Direct Red 31 is highly efficient, requiring only minimal amounts to achieve the desired color intensity. Not only does this make them cost-effective, but it also minimizes the environmental impact of the dyeing process.
Dyeing Method
(1) Recipe
Dyeing Method |
Weak alkaline |
Medium |
Dye.% |
X |
X |
Na2CO3.% |
2 |
- |
Na2SO4.% |
10-20 |
10-20 |
(2) Dyeing Procedure
(3) Coppering of copper blue
Application
Mainly used for dyeing or pringing on cotton and viscose, also can be used for dyeing on paper.
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.
25kgs Kraft bag/carton box/Fiber drum
