Zinc stearate, Pharmpur®, Ph Eur, BP, USP

- Synonyms: Stearic acid zinc salt
- C36H70O4Zn
- M = 632,33 g/mol
- CAS [557-05-1]
- EINECS-No.: 209-151-9
- Solub. in water: (20 ºC): insoluble
- Melting point: 120 - 122 ºC
- Ignition temp.: 435 ºC
- LD 50 (oral, rat): > 5000 mg/kg
- Tariff number: 2915 70 30 00
- Applications: for pharmaceutical use, cosmetics, in lubricant compositions, antiseptic, in pharma industry.

SPECIFICATIONS
assay (complexometric, as Zn): 10,0 - 12,0 %
assay (complexometric, as ZnO): 12,5 - 14,0 %
Identification zinc: passes test
freezing point: min. 54 ºC
appearance of solution : passes test
appearance of solution of fatty acids: passes test
acidity or alkalinity: passes test
acid value of the fatty acids: 195 - 210
chlorides (Cl): max. 250 ppm
sulfates (SO4): max. 0,6 %
alkali and alkaline earth metals: ........................................................................: max. 1,0 %
arsenic (As): max. 1,5 ppm
cadmium (Cd): max. 5 ppm
lead (Pb): max. 10 ppm