CAS number： 9004-65-3
Molecular formula： C12H20O10
molecular weight： 324.2848
Chemical structure：
| Product name | HPMC 5CPS | |
| Shelf life | Two years | |
| Inspection Standard | USP35 | |
| Items | Specifications | Results |
| Appearance | White to slightly off-white fibrous or granular powder | White powder |
| Identification A To E | Complies | Conforms |
| Methoxy | 28.0-30.0% | 29.3% |
| Hydroxypropoxy | 7.0-12.0% | 7.6% |
| Viscosity | 4-6mpa.s | 4.8mpas |
| Loss on drying | ≤5.0% | 2.1% |
| Residue on ignition | ≤1.5% | 1.3% |
| PH | 5.0-8.0 | 6.3 |
| Heavy Metals | ≤20PPM | <20ppm< td=""> |
| Arsenic | ≤2PPM | <2ppm< td=""> |
| Bacterium | ≤1000/g | <1000/g |
| Mold | ≤100/g | <100/g |
| Conclusion | It conforms to USP35. | |
