Ph(10g/l, 25?): 6.5-7.5 Water solubility: About 800g / l (20?) , about 1500g / l (80?) Cas no.: 23411 - 34 - 9 Calcium content: 10 % (+/- 0.5) as ca Characteristics: Easily and rapidly soluble in water because of its porous, compatible with most water-soluble fertilizers, also can be used as coloring agent