USP29
Test items Specification
ZnO 12.5-14
Alkali and alkali earth ≤1.0%
Arsenic  ≤1.5ppm
Lead ≤0.001%
Organic volatile impurities conform
BP2000
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