1. Product Introduction
Name:Zinc stearate
Molecular formula: C36H70O4Zn
CAS No.:557-05-1
EINECS No.:209-151-9
Appearance: white powder
2.Specification
(1) Industrial grade,
Test items | Specification |
Appearance | (white and fine powder) |
Assay of Zn | 10.3%~11.3% |
Free acid | ≤1% |
Loss on drying | ≤1.0% |
Melting point | 120±5℃ |
Particle size | 99.5% 325(≥99.5% through 325 mesh) |
(2)Pharmaceutical grade
Operative norm: USP29 BP2005
1. USP29
Test items | Specification |
ZnO | 12.5-14 |
Alkali and alkali earth | ≤1.0% |
Arsenic | ≤1.5PPm |
Lead | ≤0.001% |
Organic volatile impurities | conform |
2. BP 2005
Test items | Specification |
Fat acid | 195-210 |
Melting point | 119-1230C |
Density (kg/L) | 0.20-0.28 |
Not through 325mesh | ≤0.5 |
Moisture | ≤2 |
Zn | 10~12 |
Chloride | ≤250PPm |
Sulfates | ≤0.6 |
Cadmium | ≤5PPm |
Lead | ≤25PPm |
Acidity and alkali | conform |
It is used as lubricant, stabilizer, thickener, accelerant etc.
3. Package and Storage:
Packing: 20kgs/bag
Storage: Tightly sealed in a clean,cool,dry area, keep away from strong, direct light.