Tricalcium phosphate Wikipedia
Tricalcium phosphate (sometimes abbreviated TCP) is a calcium salt of phosphoric acid with the chemical formula Ca 3 (PO 4) is also known as tribasic calcium phosphate and bone phosphate of lime (BPL).It is a white solid of low solubility. Most commercial samples of "tricalcium phosphate" are in fact hydroxyapatite.. It exists as three crystalline polymorphs α, α'', and β.