Items | Specifications |
Appearance | White crystals or a white crystalline powder |
Melting point | 226-230ºC |
Acidity or alkalinity | 4.5-5.5ml |
Charity and color of solution | NMT that of reference suspension A |
Readilt carbonisable Substances | The solution has no more color than Matching Fluid A |
Heavy metals | ≤0.001% |
O-and p-toluene sulphonamide | ≤0.001% of each |
Water | Not more than 15.0% w/w |
Assay | 99-101% |
Organic Volatile impurities | Complies with USP |
Benzoate and Calculate | Complies with USP |
Arsenic | ≤0.0003% |
Selenium | ≤0.003% |