Hypophosphorous acid has four major chemical reaction theories, and the following is a detailed explanation of all the chemical reaction principles of 50% hypophosphorous acid one by one. Hope to the majority of users in the use of hypophosphorous acid as a reducing agent in the production and processing of fine chemicals and scientific research to play a basic auxiliary role.

1, principle of production and preparation

In the production of hypophosphorous acid there is a method called "four-chamber electrodialysis method", that is, positive film and negative film respectively only allow cations, anions through. It is shown in the following figure

(1), electrodialysis in the anode electrode reaction principle: 2H2O-4e-=O2↑+4H+

(2), the process of producing hypophosphate: H+ of the anode chamber diffuses through the positive film to the product chamber, and H2PO2 of the raw material chamber diffuses through the negative film to the product chamber, and the two react to generate hypophosphate

(3), the cause of impurities produced by the early three-chamber electrodialysis method: PO43-, H2PO2-, H3PO2 are oxidized

2, industrial preparation of hypophosphorous acid principle

White phosphorus (P4) is reacted with Ba(OH)2 solution to produce PH3 gas and Ba(H2PO2)2, which in turn reacts with H2SO4. Write the chemical equation for the reaction of white phosphorus with a solution of Ba(OH)2 :2P4+3Ba(OH)2+6H2O=3Ba(H2PO2)2+2PH3↑

3, principle of hypophosphorous acid ionization: H3PO2=H2PO2-+H+

4, electroless plating principle

We take hypophosphorous acid electroless silver plating as an example. Hypophosphate reduces Ag+ in solution to silver, which can be used in electroless silver plating.

(1). In hypophosphate, the valence of element P is: +1         

(2), the use of hypophosphorous acid chemical silver plating reaction, oxidizer and reducing agent of the substance of the ratio of 4:1, the oxidation product is: phosphoric acid (H3PO4) above is the hypophosphorous acid of the four major chemical theory, almost in any research and production of hypophosphorous acid manufacturing process will be applied to the above related theory. In case of

The above chemical principles do not understand alive have any objections, welcome to call hxo chemical, we discuss together.