A source of phosphate for agriculture and food industry comprises a phosphate salt in solid form of formula Mn(HPO4)y.zH2O in which M is Na, K, NH4, n=2, and y=1； or M is Ca, n=1, y=1； or M is Al or Fe, n=2, y=3； and in which z is 0, 1 or 2, wherein said phosphate salt has a phosphate content expressed as a P2O5 content of between 30 and 50% by weight of the phosphate salt, and it has a cadmium content lower than 0.40 ppm.
