Appendix XI Q. Loss on Drying of Extracts

In a flat-bottomed dish about 50 mm in diameter and about 30 mm in height, weigh rapidly 0.50 g of the extract to be examined, finely powdered. Dry in an oven at 100-105 °C for 3 h. Allow to cool in a desiccator over diphosphorus pentoxide R or anhydrous silica gel R and weigh. Calculate the result as a mass percentage.