Phosphoric Acid H3PO4 CAS 7664-38-2

Name: Phosphoric acid

CAS No: 7664-38-2

Molecular Formula: H3PO4

Synonyms: Orthophosphoric acid

Phosphoric acid deliquesces easily in the air. Pyrophosphoric acid is obtained by water loss during heating, and metaphosphoric acid is obtained by further water loss.

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Phosphoric acid is mainly used in the pharmaceutical, food, fertilizer and other industries, including as rust inhibitors, food additives, dental and orthopedic, EDIC etchants, electrolytes, fluxes, dispersants, industrial etchants, fertilizer raw materials and components, household cleaning products, and also as chemical reagents.

1. Agriculture: Phosphoric acid is the raw material for the production of important phosphate fertilizers (superphosphate, potassium dihydrogen phosphate, etc.), and also the raw material for the production of feed nutrients (monocalcium phosphate).

2. Industry: Phosphoric acid is an important chemical raw material. Its main functions are as follows:

2.1 Treat the metal surface to form an insoluble phosphate film on the metal surface to protect the metal from corrosion.

2.2 Mixed with nitric acid as a chemical polishing agent to improve the smoothness of the metal surface.

2.3 Phosphate ester as raw material for production of detergents and pesticides.

2.4 Raw materials for producing phosphorus-containing flame retardants.

3. Food: Phosphoric acid is one of the food additives. It is used as sour agent and yeast nutrient in food. Cola contains phosphoric acid. Phosphate is also an important food additive and can be used as a nutritional enhancer.

4. Medicine: Phosphoric acid can be used to make drugs containing phosphorus, such as sodium glycerophosphate.

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