Molecular formula: Ca［CH3(CH2)16COO］2
CAS NO.:1592-23-0
Main uses
In tablet preparation, calcium stearate is used as lubricating agent, and release agent.
| Testing item | Testing standard | |
| Specification | USP35-NF30 | BP2013 |
| appearance | white or almost white fine powder; insoluble in water and ethyl alcohol | white or almost white fine powder; insoluble in water and ethyl alcohol |
| identification | meet the specification | meet the specification |
| alkali and alkali metal salt | / | meet the specification |
| content(in calcium oxide), % | 9.0-10.5 | / |
| content(in calcium), % | / | 6.4-7.4 |
| chloride, % | / | ≤0.1 |
| sulfate, % | / | ≤0.3 |
| loss on drying, % | ≤4.0 | ≤6.0 |
| heavy metal, ppm | ≤10 | / |
| nickel, ppm | / | ≤5 |
| lead, ppm | / | ≤10 |
| cadmium, ppm | / | ≤3 |
| freezing point, ℃ | ≥54 | ≥53 |
| acid value | / | 195-210 |
| stearic acid content, % | / | ≥40 |
| stearic acid&palmitic acid content, % | / | ≥90 |
Packaging
woven bag lined with high pressure PE film; 20kg/bag or follow customer’s packaging instruction
