Appearance Yellowish crystalline powder
Identification IR same as the standard, RT same as the reference
Loss on drying 1.0% Max.
Residiue on ignition 0.1% Max.
Organic volatile impurities As stipulated
Acidity & Alkalinity As stipulated
6-MP Less than 0.5%
1-Methyl-4-nitro-5-chloroimidazole Less than 0.5%
Unknown impurities Less than 0.1%
Total unknown impurities Less than 0.2%
Total impurities 1.0% Max.
Assay (Dry basis) 98.0-101.5%