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Zinc stearate
Items: SF-040
Products name: Zinc stearate
Specification: Industrial grade; USP-29
CAS No.: 557-05-1
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±5ºC |
| 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.