40% Sodium Sulphate Anhydrous
Type: Sodium Sulphate
CAS No.: 7757-82-6
Other Names: sodium sulfate
EINECS No.: 231-820-9
Place of Origin: JiangSu, China (Mainland)
Application: Cleaning, detergent, glass making, textile
Package: 25kg/plastic Woven Bag Lined
Boiling point: 1404℃
For direct dyes and other dyeing cotton dyeing agents When dyeing cotton with direct dyes, sulphur dyes, vat dyes and indomethacin dyes, sodium sulphate powder can be used as a dyeing agent. These dyes are easily dissolved in the formulated dye solution, but are not easily dyed with cotton fibers. Since the dye is not easily exhausted, there are many dyes remaining in the foot water. Adding sodium sulphate powder can reduce the solubility of the dye in water, thus increasing the coloring power of the dye. In this way, the amount of dye can be reduced, and the dyed color is deepened.
1. The amount of sodium sulphate powder depends on the coloring power of the dye used and the depth of the desired color. Do not add too much or too fast, otherwise the dye in the dye solution will precipitate and cause stain on the cloth surface. .
2. When cotton fabric is dyed, sodium sulphate powder is generally added in batches from 3rd to 4th. Because the dyeing solution is very thick before dyeing, if it is added quickly, the dye is dyed too fast, and it is easy to produce unevenness. It is necessary to add it after dyeing for a while.
3. sodium sulphate powder should be fully deepened with water before use, and can be added to the dyebath after filtration. It is also necessary to stir the dye bath and slowly add it to prevent the local dyebath from contacting the dye by a large amount of dye. Salting out occurs.