Tetrakaltsiumpürofosfaat

Tetrakaltsiumpürofosfaat is an inorganic compound with the chemical formula Ca4P2O7. It is a salt of pyrophosphoric acid and calcium. This compound typically appears as a white powder or crystalline solid. It is insoluble in water but can react with strong acids. Tetrakaltsiumpürofosfaat is a member of the pyrophosphate family, characterized by the P-O-P linkage in its structure.

In its industrial applications, tetrakaltsiumpürofosfaat has been utilized as a component in certain dental care products, specifically toothpastes, where it acts as a tartar control agent. It functions by inhibiting the formation of calculus, which is hardened dental plaque. Its presence in these formulations is intended to help reduce the accumulation of mineral deposits on teeth. Beyond dental applications, it has also found use in some specialized ceramic formulations and as a component in certain food additives, though its use in food is less common than other calcium phosphates. The synthesis of tetrakaltsiumpürofosfaat typically involves the reaction of calcium oxide or calcium hydroxide with phosphoric acid or calcium phosphate under controlled heating conditions.