Content of NaCl in % (dry basis) MIN 99.5% Content of CaCl2 (Calcium) in % MAX. 0.04% Content of MgCl2 (Magnesium) in % MAX. 0.014% Content of K (Potassium ) in % MAX. 0.012% Content of CaSO4 (Sulfate) in % MAX. 0.04% Water content in % MAX. 3% Insolubles in % MAX. 0.01% Granulation 0-8 mm, 6% OS