CAS number： 9004-65-3
Molecular formula： C12H20O10
molecular weight： 324.2848
Chemical structure：
| Product name | HPMC 50CPS | |
| Shelf life | Two years | |
| Inspection Standard | USP | |
| Items | Specifications | Results |
| Appearance | white or off-white fibrous or granular powder | White powder |
| Hydroxypropyl content % | 7.0—12.0 | 7.7 |
| Methoxyl content % | 28.0-32.0 | 28.6 |
| Loss on drying % | 5.0max | 3.5 |
| Residue on ignition % | 1.5max | 1.07 |
| pH @25℃ | 5.0-7.5 | 6.6 |
| Insolubles in Water % | 0.5max | 0.24 |
| Total bacteria % | 1000max | 377 |
| Total Mold % | 70max | 55 |
| Heavy metal ppm | 20max | ≤20 |
| Viscosity cps | 40-60 | 53 |
| 100 M % | 98min | ≥98 |
| Conclusion: | In conformity with USP | |
