Acidity Of H3po4

Phosphoric acid

acidity of h3po4 Description:

Phosphoric acid is produced by thermal method. High purity yellow phosphorus is heated and melted into liquid by water seal. The liquid yellow phosphorus is atomized by compressed air into the nozzle in the combustion hydration tower to burn and oxidize into phosphorus pentoxide.The circulating acid and concentrated acid are prepared by using the water heated and evaporated from the circulating acid sprayed along the inner wall of the tower and the phosphorus pentoxide. The finished phosphoric acid is prepared by the process of acid mixing, dearsenical decolorization and refining, filtration, concentration under pressure and filtration.The main chemical reactions that occur in the thermal production of phosphoric acid are as follows:

4P+5O2→2P2O5

P2O5+3H2O→2H3PO4

In the process of production, when the "easy oxide" is not qualified by the control analysis, the appropriate amount of hydrogen peroxide is added to oxidize PHOSPHOROUS ACID (H3PO3, PHOSPHOROUS ACID) and HYPOPHOSPHOROUS acid (H3PO2, HYPOPHOSPHOROUS ACID) as phosphoric acid, so that the "easy oxide" index meets the technical requirements.Because this method uses high purity yellow phosphorus and high purity purified water as raw materials, high quality phosphoric acid with very low impurity content can be prepared.

acidity of h3po4 use:

Pharmaceutical industry: Sodium phosphate is an important raw material for the preparation of drugs, such as antibiotics, anti-inflammatory drugs and so on.In addition, phosphoric acid also plays an important role in the study of protein structure, the catalytic process of enzymes and cell metabolism.

acidity of h3po4 Packing:

Phosphoric acid is a Class II inorganic acidic corrosive substance with hazard code 93002. There are two types of packaging for exported phosphoric acid: one is packaged in an iron drum lined with polyethylene, with a net weight of 320kg per drum, and the other is packaged in a plastic drum, with a net weight of 35kg per drum. The opening of each packaging drum must be tightly sealed with an inner and outer lid. Edible phosphoric acid should be packaged in an edible polyethylene drum and labeled as "Food Grade" on the drum.

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