Sodium Pyroantimonate 1

Sodium pyroantimonate is used as a glass clarifying agent in the production of high-end glass such as solar glass, and it can also be used as a flame retardant and efficiency enhancer for plastics and rubber. The preparation method first fully reacts sodium hydroxide and xylene trioxide to replace water, then introduces ozone for full oxidation, recrystallization, centrifugation and drying. This invention uses ozone as the oxidant, which has a good oxidation effect. Sodium pyrooxide is obtained by microwave removal, and then the crystalline water of sodium pyroantimonate is removed by microwave. Finally, the pH value of the chemicalbook is adjusted. Dry to obtain neutral sodium metantimonate. The crystalline water of sodium pyroantimonate can prevent the high-temperature yellowing of the generated sodium antimonate. Adjusting sodium antimonate to neutral makes it more suitable for use as a flame retardant in polymer processing. The production process of the present invention is simple, the reaction time is short, the process is environmentally friendly, the production cost is low and gradually decreases. The prepared sodium pyroantimonate and sodium metantimonate have high purity, high whiteness and neutral pH, and can be widely used as flame retardants in the plastic field.