It is a common inorganic acid and a medium-strong acid with a chemical formula of H3PO4 and a molecular weight of 97.995. Not easy to volatilize, not easy to decompose, almost no oxidation. It has the properties of an acid and is a ternary weak acid. Its acidity is weaker than hydrochloric acid, sulfuric acid, and nitric acid, but stronger than acetic acid, boric acid, etc. Phosphoric acid deliquesces easily in the air. Heating will cause water loss to produce pyrophosphoric acid, and further water loss will produce metaphosphoric acid. Phosphoric acid is mainly used in pharmaceutical, food, fertilizer and other industries, including as a rust inhibitor, food additive, dental and orthopedic, EDIC corrosive, electrolyte, flux, dispersant, industrial corrosive, fertilizer raw material and component for household cleaning products, and also Can be used as chemical reagent.
Agriculture: Phosphoric acid is the raw material for the production of important phosphate fertilizers (superphosphate, potassium dihydrogen phosphate, etc.) and the raw material for the production of feed nutrients (calcium dihydrogen phosphate).
Industry: Phosphoric acid is an important chemical raw material with the following main functions:
1. Treat the metal surface and generate an insoluble phosphate film on the metal surface to protect the metal from corrosion.
2. Mix with nitric acid as a chemical polishing agent to improve the finish of the metal surface.
3. Phosphate ester, a raw material for the production of detergents and pesticides.
4. Raw materials for producing phosphorus-containing flame retardants.
Food: Phosphoric acid is one of the food additives. It is used as a sour agent and yeast nutrient in food. Coca-Cola contains phosphoric acid. Phosphates are also important food additives and serve as nutritional enhancers.
Medicine: Phosphoric acid can be used to prepare phosphorus-containing drugs, such as sodium glycerophosphate, etc.
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It is a common inorganic acid and a medium-strong acid with a chemical formula of H3PO4 and a molecular weight of 97.995. Not easy to volatilize, not easy to decompose, almost no oxidation. It has the properties of an acid and is a ternary weak acid. Its acidity is weaker than hydrochloric acid, sulfuric acid, and nitric acid, but stronger than acetic acid, boric acid, etc. Phosphoric acid deliquesces easily in the air. Heating will cause water loss to produce pyrophosphoric acid, and further water loss will produce metaphosphoric acid. Phosphoric acid is mainly used in pharmaceutical, food, fertilizer and other industries, including as a rust inhibitor, food additive, dental and orthopedic, EDIC corrosive, electrolyte, flux, dispersant, industrial corrosive, fertilizer raw material and component for household cleaning products, and also Can be used as chemical reagent.
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