Chemical Product Library / Reference
Magnesium stearate
Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.
Chemical identity
| English name | Magnesium stearate |
|---|---|
| English synonyms | Magnesium stearate;Magnesium distearate;Octadecanoic acid magnesium salt |
| Chinese name | 硬脂酸镁 |
| Chinese synonyms | 镁皂;硬脂酸镁;十八酸镁 |
| Chemical category | Lubricants |
| CAS No. | 557-04-0 |
| EINECS No. | 209-150-3 |
| Molecular formula | C36H70MgO4 |
| Molecular weight | 591.24 |
PubChem structure images are reference depictions, not proof of composition, purity, grade, or regulatory status. Mixtures and polymers may not have a single representative structure.
Technical indicators
Mg content 4.0–5.0%; free acid (as stearic acid) ≤1.0%; moisture ≤3.0%; melting point 130–140°C
Performance characteristics
White powder, insoluble in water, excellent lubricity and anti-caking properties
Application scenarios
Pharmaceutical tablet lubricant, food supplement excipient, cosmetic powder, plastics lubricant