Phosphoric acid

short description:

A common inorganic acid, phosphoric acid is not easy to volatilize, not easy to decompose, almost no oxidation, with acid commonness, is a ternary weak acid, its acidity is weaker than hydrochloric acid, sulfuric acid, nitric acid, but stronger than acetic acid, boric acid, etc. Phosphoric acid is easily deliquified in the air, and heat will lose water to get pyrophosphoric acid, and then further lose water to get metaphosphate.

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Product Details

Specifications provided

Colorless clear liquid

(liquid content) ≥85%

(Scope of application reference ‘product usage’)

Orthophosphoric acid is phosphoric acid composed of a single phospho-oxygen tetrahedron. In phosphoric acid, the P atom is sp3 hybrid, three hybrid orbitals form three σ bonds with the oxygen atom, and the other P-O bond is composed of one σ bond from phosphorus to oxygen and two d-p bonds from oxygen to phosphorus. A σ bond is formed when a lone pair of electrons from a phosphorus atom coordinates to an empty orbital of an oxygen atom. The d←p bond is formed by overlapping the py and pz lone pairs of oxygen atoms with the dxz and dyz empty orbitals of phosphorus atoms.

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Product Parameter

CAS Rn

7664-38-2

EINECS Rn

231-633-2

FORMULA wt

97.995

Product Usage

Main use

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

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

1, treat the metal surface, generate insoluble phosphate film on the metal surface to protect the metal from corrosion.

2, mixed with nitric acid as a chemical polish to improve the finish of the metal surface.

3, the production of washing supplies, pesticide raw material phosphate ester.

4, the production of phosphorus-containing flame retardant raw materials.

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

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