CAS number: 99-76-3
Molecular formula: C8H8O3
molecular weight: 151.1399
Chemical structure:
Certificate of Analysis
Product Name | Methyl Paraben | |
Expiry Date | 2 years | |
Inspection Standard | USP29 | |
Item | Specification | Result |
Appearance | White crystalline powder | Comply |
Purity(on dry base)% | 99.0-100.5 | 99.3 |
Melting point | 125-128 | 126.4 |
Acid | Passed | Passed |
Identification | A. Infrared absorption Spectrophotometry B. Thin-Layer Chromatographic | Passed |
Residue % | ≤ 0.1 | 0.030 |
Loss on drying % | ≤0.50 | 0.35 |
Heavy metal (Pb) | ≤10ppm | 3ppm |
Organic Volatile Impuritie | Passed | Passed |
Related Substances | Passed | Passed |
Appearance of solution | Clear | Passed |