Baking powder is a leavening agent, is made by adding some chemical formula soda powder, generally do pastry, add baking powder, can make pastry more fluffy, outside selling steamed buns will generally add baking powder.

Calcium hydrogen phosphate is an inorganic substance with a chemical formula of CaHPO4. It is a white monoclinic crystalline powder, odorless and tasteless, easily soluble in dilute hydrochloric acid, dilute nitric acid, acetic acid, slightly soluble in water (100°C, 0.025%), insoluble For ethanol, ......

Tricalcium phosphate used as a mordant, and also used for the coloring of ceramics, glass, paint, etc.

Phosphorus is an important mineral element necessary for the human body. The main source of phosphorus intake by the human body is natural food or food phosphate additives.

Calcium carbonate is an inorganic compound with the chemical formula CaCO₃, commonly known as limestone, limestone, stone powder, etc.

The structural formula of the phosphoric acid functional group in an acidic solution.