... /100mI 25), almost insoluble in ethanol 1,Formula :Ca3(C6H5O7)2·4H2O2,Formula wt: 570.503,CAS: [5785-44-4]4 ... °C,4h%)Fluoride,≤ppm3030Arsenic(As),≤ppm--1Lead(Pb),≤ppm21Mercury(Hg),≤ppm--1Carbonates--Dissolving 1 g of calcium citrate in 10 ml 2 N ... hydrochloric acid mustnot liberate more than a few isolated bubbles calcium citrate