Potassium stearate is a kind of fine white,fluffy powder with greasy touch sense and fatt odor,soluble in hot water or alcohol,and its solvent is alkaline because of hydrolysis.
Potassium stearate is anion type surface active agent,which widely applied in acrylate rubber soap/sulfur and vulcanized system.
| ITEM | STANDARD |
| Appearance | White fine powder, greasy to touch |
| Assay (dry basis, %) | >= 98 |
| Loss on drying (%) | =< 5.0 |
| Acid value of fatty acids | 196~ 211 |
| Acidity (%) | 0.28~ 1.2 |
| Acid stearic of fatty acids (%) | >= 40 |
| Total stearic acid and palmitic acid of fatty acids (%) | >= 90 |
| Iodine number | =< 3.0 |
| Free potassium hydroxide (%) | =< 0.2 |
| Lead (Pb) | =< 2 mg/kg |
| Arsenic (As) | =< 3 mg/kg |
| Heavy metal (as Pb) | =< 10 mg/kg |