0102030405
The Most Popular Direct Red 4BE For Dyeing Cotton
Product Specification
Name |
Direct Red 4BE |
Other Name |
Direct Red 28 |
Cas No. |
573-58-0 |
Appearance |
Reddish Brown Powder |
Packing |
25kgs Kraft bag/carton box/Iron drum |
Strength |
100% |
Application |
Used for dyeing cotton,paper,leather,silk and wool so on. |
Product Description
Appearance is red powder. Soluble in water (red to brown light red) and fibrinolysin, but also soluble in ethanol and acetone, insoluble in other organic solvents. In case of concentrated sulfuric acid is red blue, after dilution is light green light blue, there is precipitation; When encountering concentrated nitric acid, it becomes a blue solution and turns yellowish brown. In the case of concentrated hydrochloric acid, in the case of concentrated sodium hydroxide, in the case of orange brown precipitation, in the case of 10% sodium hydroxide, in the case of red solution
Product character
1. Direct Red 4BE is usually dissolved directly in water;
2. It has high directness to cellulose fibers and can be dyed directly without using other chemical methods;
3. Complete chromatography, low price, easy to operate, is a cost-effective dye type;
4. Good fastness, the fastness to light of the dye increases with the deepening of color.
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
Direct Scarlet 4BE used in fiber, silk, cotton spinning, leather and other industries, and also has manyapplications in paper making and other industries.
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//Iron drum/25kgs carton box
