We are offering mercurous nitrate ar hg2(no3)2.2h2o m.w. 561.22 minimum assay(by iodometry) 98% max. Limits of impurities : chloride(cl) 0.005% sulphate(so4) 0.005% foreign heavy metals(as pb) 0.002% iron(fe) 0.001% mercury(ii)as hg) 0.5% substances not reducible with formic acid (residue on ignition, as sulphate) 0.01% substances insoluble in dilute nitric acid passes test cas no: 14836-60-3 un no. 6.11625 tariff : 2834 29 90 r : 262728-33 s : 13-28.1-45 f :