Product Name: Phosphate

Alias: orthophosphate, ortho-phosphoric acid
English name: Phosphoric acid
CAS: 7664-38-2
Chemical formula: H3PO4
MW: 98.0
Appearance: white solid or colorless viscous liquid (> 42 ° C)
Density: 1.685 g / ml (solution)
Melting point: 42.35 ° C (316 K)
Boiling point: 158 ° C (431 K) ((decomposition))

An important phosphate (H3PO4) inorganic acid, fertilizer industry is an important intermediate in the production of products for the production of high concentrations of phosphate and compound fertilizers. Phosphoric acid or soap, detergents, metal surface treatment agent, food additives, feed additives and water treatment agent used various phosphates, phosphate raw material. As a raw material for the production of fertilizer, an aqueous solution of phosphoric acid or phosphoric acid.
Orthophosphoric acid concentration of goods is generally 52% ~ 54% P2O5, with continuity acid, which is less acidic than thiamine, hydrochloric acid, nitric acid is weak, but stronger than acetic acid, boric acid and the like. Lose some of the water into a pyrophosphate in water and ethanol, heated to 213 ℃; the loss of a molecule of water is heated to 300 ℃, and further into metaphosphate (HPO3). Hygroscopic, can absorb moisture in the air. Corrosive to the skin, Air maximum allowable concentration 1mg / m3.