CAS NO: 63372-86-1
Specification: Enter. Standard
| Product Name | Metamizole magnesium |
| Quality Standard | Enter. Standard |
| Testing Items | Critrion |
| Appearance | White or almost white crystalline powder |
| Odor | Almost odorless |
| Solubility | Free dissolve in water and methanol, dissolve in ethanol |
| Identification | IR meets UV meets Reaction with H2O2 Blue color turns to red Magnesium id. White prcipitate |
| Appearance of solution | Clarity of solution NMT Suspension I Color of solution NMT Grade 5 |
| Color stability test | NMT grade 7 |
| Acidity or alkalinity | NMT 0.1ml NaOH 0.02mol/0.25g |
| Loss on drying | 13.5%-15.5% |
| Sulphates | ≤0.1% |
| Heavy metals | ≤20ppm |
| Related substances | Impurity A ≤0.2% Impurity B ≤0.2% Impurity C ≤0.5% Impurity D ≤0.2% Any other impurity ≤0.2% Total Impurities ≤0.5% |
| Residue Solvents | Methanol ≤0.3% Ethanol ≤0.5% |
| Assay | Metamizole 98.0-102.0% on dry basis Magnesium 3.16%-3.29% refered to hexahydrate |