Appearance
Identification Melting point Acidity or alkalinity Charity and color of solution Readilt carbonisable Substances
Heavy metals O-and p-toluenesulphonamide Water Assay Alkalinity
Organic Volatile impurities Benzoate and Calculate Arsenic Selenium |
White crystals or a white crystalline powder Complies with BP/USP 226-230℃ 4.5-5.5ml Color is clear Not more intensely Colored than reference B6≤10PPM 10PPM of each Not more than 15.0%W/W 99-101% No red color is produced with phenolphthalein Ts Complies with USP Complies with USP ≤3PPM ≤0.003% |
20-40mesh complies Complies
226.8-229℃ 5.10ml Complies
Complies Complies Complies 14.1% 99.42% No red color is produced with phenolphthalein Ts Complies with USP Complies with USP Complies Complies |