Introduction:calcium nitrate, 5Ca(NO3)2.NH4NO3.10H2O spec: calcium nitrate 76%min. ammonium nitrate: 6-10% total nitrogen: 15.5%min. Ca: 18.5%min. water insoluble matter: 0.2%max. Fe: 0.005%max. Ph value: 5.6-6.8 granularity: 2-4mm