What is Ca4P2O7? Important knowledge about Ca4P2O7

Definition of Ca₄P₂O₇:
Ca₄P₂O₇ is also known as calcium phosphate, or calcium pyrophosphate in English. It is a white solid formed from calcium, a chemical element with the symbol Ca and atomic number 20, and phosphorus, an element with the symbol P and atomic number 15, along with the element oxygen. Calcium phosphate has a molecular structure consisting of 4 calcium atoms, 2 phosphorus atoms and 7 oxygen atoms. The molar mass of calcium phosphate is 278.18 g/mol.

Properties of Ca₄P₂O₇:
2.1 Physical properties of Ca₄P₂O₇: Calcium phosphate is a solid at standard state, colorless and odorless. The pH of calcium phosphate usually falls between 6 to 7, making it a neutral substance.
2.2 Chemical properties of Ca₄P₂O₇: Calcium phosphate is insoluble in water, but it can react with strong acids to form calcium salts.

Common chemical equations involving Ca₄P₂O₇:
Calcium phosphate generally does not participate in chemical reactions with metals, salts, or nonmetals. However, it can react with strong acids such as sulfuric acid to form calcium sulfate, water, and diphosphoric pentaoxide.

Synthesis of Ca₄P₂O₇:
4.1 Laboratory synthesis of Ca₄P₂O₇: Calcium phosphate can be synthesized by reacting calcium oxide or calcium hydroxide with phosphoric acid.
4.2 Industrial synthesis of Ca₄P₂O₇: In industry, calcium phosphate can be produced by the thermal decomposition of calcium monophosphate.