Dyestuff Auxiliary/Sodium Lignosulphonate
1.Appearance:dark Brown powder
Compose:Modified Lignosulphonate Sodium
Ion Type:Negative Ion
Solubility:Easily dissolved in water
2. The main technical standard
Items
Parameter
PH (1percent water solution)
9—10.5
Reductant content, %
3max
Thermal Stability 130degrees level
4-5
dispersion level in high temperature
A-4
Ca2+ Mg2+ content, ppm ≤
2000
Insoluble in water, % ≤
0.3
3. Performance and use
Mainly used in disperse dye and vat dye, can also be diluents in acid dye and dispersion agent in pigment.
1. When used as dispersion agent in pigment, the ratio should be decided according to intensity of dye. After getting the ratio, half of the sodium lignosulphonate should be put in dye and grinded first, after that then add the other half. This will result in a better grinding effect than adding sodium lignosulphonate all one time.
When used as filler, it is ok to put t…