CAS number:
Molecular formula:
molecular weight:
Chemical structure:
Product | Hydroxypropyl Methylcellulose Phthalate HP55 | |
Shelf life | 2 years | |
Tests | Standard USP32 | Result |
Appearance | White or almost white granular solid,odorless,tasteless | White powder |
Identification | Complies | Conforms |
Viscosity | 32-48mpa.s | 43mpa.s |
Loss on drying | ≤5.0% | 3.4% |
Residue on ignition | ≤0.2% | 0.02% |
Chlorides | ≤0.07% | <0.07 |
Heavy metals | ≤10PPM | <10PPM |
Free Phthalic Acid | ≤1.0% | 0.4% |
Esterification percent | 27.0-35.0% | 34.3% |
Conclusion | It conforms to USP32. |