CAS number： 557-04-0
Molecular formula： C36H70MgO4
molecular weight： 591.2544
Chemical structure：
| Product name | Magnesium Stearate | |
| Shelf life | Two years | |
| Inspection Standard | USP32 | |
| Items | Specifications | Results |
| Characters | A very fine,light,white powder,odourless or with a very slight odour of steric acid | Conforms |
| Identification A and B | Complies | Conforms |
| Acidity or alkalinity | Complies | Conforms |
| Chlorides | ≤0.1% | ＜0.1% |
| Sulphates | ≤1.0% | ＜1.0% |
| Lead | ≤10ppm | ＜10ppm |
| Loss on drying | ≤6.0% | 4.4% |
| Magnesium | 4.0～5.0% | 4.2% |
stearic acid composition stearic acid & palmitic acid composition | ≥40% ≥90% | 42% 98% |
| Total bacterial count | ≤1000cfu/g | ＜1000cfu/g |
| Total plate count | ≤1000cfu/g | Conforms |
| Yeast&Mold | ≤500cfu/g | ＜500cfu/g |
| Salmonella | Negative | Conforms |
| E. coli | Negative | Conforms |
| Conclusion | It conforms to USP32. | |
