Pure Magnesium ingot, Mg 99.90% ~ 99.95% of 7.5kg +/- 0.5kg ingot weight, packing ... , clean, acid washed and without oxidation.Chemical composition:Mg 99.90%: Fe 0.04%max, Si 0.02%max, Ni 0 ... requirements is according to the clients. Pure magnesium ingot 99.9% min