... 55%, 3% to 4% sodium chloride, magnesium chloride 2%, 1% calcium sulfate to 2%, moisture 6%.CAS No.: 7447-40-7 ... soils, potassium absorbed by crops, the remaining chloride ions and hydrogen ions generated soil colloids hydrochloric acid (HCl), soil acidity. ... . 2) In calcareous soil, chloride and calcium ions in soil to produce calcium chloride. Calcium chloride soluble in water, irrigation or rainfall ...