Octadecanoic Acid/ Magnesium Salt contains two equivalents of stearate [the anion of stearic acid] and one magnesium cation [Mg2+]. Magnesium Salt melts at about 88°C and is not soluble in water. Magnesium Salt is generally considered safe for human consumption at levels below 2500 mg/kg per day. Octadecanoic Acid/ Magnesium Salt is formulated using accurate composition that ensures safety of usage.