"Dicalcium phosphate is a calcium
supplement commonly found in prepared breakfast cereals, in
pharmaceuticals as an inert ingredient to bind tablets, and in
toothpastes. However, too much dicalcium phosphate, or dicalcium
phosphate taken in conjunction with other medications, can have negative
consequences. In addition, inhalation or skin exposure to the powdered
form, if used as a reagent in a laboratory setting, for example, can be
irritating.....
Effects on the skin...