Products
SL-30/SL-40
Number:
jhj_02
Description
This product is used in the liming stage together with sodium sulphide or sodium hydrogen sulphide to improve the hair removal process; and to prevent excessive swelling of the surface alkali during the liming stage. Reduce the biological oxygen demand and chemical oxygen demand of the leather in the case of a reduced amount of sulfide.
SL-30 or SL-40 reduces skin scaling, leaving the skin surface clean and reducing grain shrinkage to increase the rate of leather.
In the ash-removing stage, SL-30 or SL-40 can increase the solubility of lime, allowing lime to penetrate into the leather more quickly and evenly, with a certain slowing effect. So that the gray belly and belly should not become loose.
Because of the high pH, it can be used with sodium sulfide and sodium hydrogen sulfide without generating sulfur. (If the pH value of the liming is lowered, toxic sulfur gas will be produced.)
Main ingredient: fatty amine
Content: 30± 2% (SL-30)
40±2% (SL-40)
PH value: 9 ~ 11.5
Appearance: transparent liquid
Recommended usage:
1.5% SL-30 or SL-40 is generally recommended during the depilation stage. On the basis of this amount, the amount of sulfide can be reduced by 0.5 to 1.0%. SL-30 or SL-40 is usually added in two portions during the depilation and liming stage, and is added with 1.0% of SL-30 or SL-40 when the first sulfide is added. When the second sulfide is added, 0.5% can be used or applied to the fly ash stage.
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