Nomenclature : 5 chloro 2 hydroxy benzoxazole : 2 hydroxy 5 chlorobenzoxazole Empirical formula : c7 h4 cl n o2 Mol. Wt. : 169.58 Characteristics : Description : whitish fine crystalline powder. Melting range : 191°c - 194°c Purity : chromatographic (by tlc): complies with u.S.P. : individual impurity is not more than 0.25% Assay : 98.9% to 100% Pharmacopeial : as per u.S.P.23 Specifications Loss on drying : not more than 0.2% (limit is 0.5%) Heavy metals : not more than 0.002% (20 ppm maxi.) Chlorine content : 20.6% to 21.2% Residue on ignition : 0.15% maxi. Packing :25 kgs. Fibre drums with double pe liners.