Potassium iodide ar ki m.w. 166.00 minimum assay(after drying) 99.8% maximum limits of impurities: insoluble matter 0.003% loss on drying at 1200c 0.2% acidity(hi) 0.0065% alkalinity 0.006% chloride and bromide(cl) 0.01% iodate(io3) 0.0002% nitrogen compounds(n) 0.001% phosphate(po4) 0.001% sulphate(so4) 0.0025% barium(ba) 0.001% iron(fe) 0.0002% lead(pb) 0.0002% sodium(na) 0.05% cas no: 7681-11-0 un no. Nr hs code : 2827 60 10 r : 4243 s : 22-3637 f :