Synthetic method and application of sodium molybdate

The synthetic method of sodium molybdate:

1. It can be obtained by melting the mixture of molybdenum trioxide and sodium carbonate in the laboratory. In industry, the raw material molybdenite (the main component MoS2) is oxidized and roasted to make crude molybdenum oxide, washed with nitric acid to remove impurities, then dissolved in sodium hydroxide aqueous solution, heated and concentrated to obtain sodium molybdate dihydrate Na2MoO4·2H2O. Heated to 100 ℃ Serve anhydrous.

Main uses of sodium molybdate:

1. For the preparation of molybdenum salts and dyes, pigments, catalysts, corrosion inhibitors, etc.

2. Used as metal corrosion inhibitor, scale remover, bleach accelerator and skin and hair protectant

3. Used as analytical reagent for alkaloid determination, dyestuff and pharmaceutical industry

4. Precipitants, catalysts, molybdenum salts used in the manufacture of alkaloids, inks, fertilizers, molybdenum red pigments and lightfast pigments, also used in the manufacture of flame retardants and metal inhibitors for pollution-free cold water systems, and also used as plating agents. Zinc, polishing agents and chemical reagents.

5. Molybdate is an anodic oxide film type corrosion inhibitor, which forms a passivation film of ferrous-high iron-molybdenum oxide on the anode iron to play a role in corrosion inhibition.