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zinc stearate

Product Name: zinc stearate
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°C
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. Shelf life and Storage:
Shelf life: 2 years
Storage: Tightly sealed in a clean,cool,dry area, keep away from strong, direct light.
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