Appearance Light yellow or grayish white powder, granule . Initial melting point 170.0 ¢Jmin. 166.0¢Jmin. 162.0¢J min. . Heating loss 0.30% max. 0.40% max. 0.50% max. . Ash 0.30% max. 0.50% max. 0.70% max. . Residue on 100 µm sieve 0.0% max. 0.1% max. 0.1% max. . Property: Slightly foul odour and bitter taste, nontoxic.