Molybdenum is an essential trace element for human body, animals and plants. Silver-white metal, hard and tough. The appearance of sodium molybdate is white diamond crystal. Also known as sodium molybdate dihydrate or disodium molybdate. The chemical formula of sodium molybdate is Na2MoO4·2H2O. Sodium molybdate is stable and incompatible with strong oxidizing agents. Dissolved in 1.7 parts of water and about 0.9 parts of boiling water and 5% aqueous solution, the pH is 9.0 to 5.0 at 25°C. Relative density (d184) 3.28, melting point 687°C. And it’s poisonous and has a strong smell. Slightly soluble in water, insoluble in acetone. When heated to 100 ℃, it loses crystal water and becomes anhydrous.

Molybdenum is a precious and rare metal with high melting point and an important strategic material. It produces important alloying elements such as alloy steel, stainless steel, heat-resistant steel and alloy cast iron. Molybdenum and its alloys have good thermal conductivity, electrical conductivity, low thermal expansion coefficient, High temperature resistance, wear resistance, corrosion resistance, good chemical stability and other characteristics. Iron and steel industry, metal processing industry, metallurgical industry, building material industry, electric light, unknown industry, chemical industry, textile industry, machinery industry and agriculture all have a very large demand for molybdenum.

Sodium molybdate has a wide range of applications in modern society.

  • In the application of corrosion inhibitors. Since molybdenum is a corrosion-resistant metal, its compound, sodium molybdate, is generally harmless to the human body. Therefore, using sodium molybdate as a corrosion inhibitor to replace toxic and even carcinogenic nitrite and chromate has become a popular choice for environmental substances. The use of sodium molybdate can reduce the loss of metal corrosion. In addition, sodium molybdate inhibitors have further applications in sectors such as engine coolants, industrial cooling water, pigment coatings, concrete, water, fluids and metalworking fluids.
  • In the application of cleaning agents. Since molybdenum is not only harmless to the human body, but also an essential metal element for the human body, sodium molybdate is also widely used in cleaning agents. The washing index of the cleaning solution containing sodium molybdate and the cleaning solution without sodium molybdate can be increased by 6 percentage points. In addition, sodium molybdate also has a good application in tea stain remover and pipe wall cleaner.
  • In the application of lubricants. The addition of fat due to sodium molybdate can improve the mechanical properties of rust. Therefore, sodium molybdate is added to lubricants such as molybdenum dialkyldithiophosphate, molybdenum dialkyldithiocarbamate, molybdenum diaryldithiophosphate, and molybdenum dialkyldithiophosphate.
  • Sodium molybdate is used to manufacture alkaloids and other substances, as well as dyes, molybdenum red pigments, catalysts, molybdenum salts and fast lake precipitants. It is a raw material for flame retardant materials, a metal corrosion inhibitor for an environmentally friendly cooling water system, and a trace element for animals and plants.