We are offering ammonium sulfamate ar (for determination of sulphonamide in blood) h2nso3nh4 m.w. 114.12 min. Assay(by acidimetry) 98.5% ph(5%. Water) 5.0-6.0 maximum limits of impurities : chloride(cl) 0.001% sulphate(so4) 0.02% heavy metal(as pb) 0.0005% iron(fe) 0.0005% loss on drying(105oc) 1.0% residue on ignition(as sulphate) 0.02% cas no : 7773-06-0 un no. Nr tariff : 2842 90 90 r :