CAS number: 7631-95-0, 10102-40-6 (dihydrate)
EC Number: 231-551-7
RTECS number: QA5075000
Molecular formula: Na2MoO4
Molar mass: 205.92 g / mol (anhydrous) 241.95 g / mol (dihydrate)
Appearance: White powder
Density: 3.78 g / cm3, solid
Melting point: 687 ° C, 960 K, 1269 ° F
Solubility in water: 84 g / 100 ml (100 ° C)
Refractive Index (nD): 1.714
Its chemical formula is Na2MoO4. It is a water soluble white diamond crystal chemical compound. Dehydration may occur when the product is left on for longer than 100 ° C. It is widely used in the field of agriculture and metal finishing. It is the intermediate of tungsten. It is useful as a source of molybdenum. It is usually present in the form of dihydrate in the form of Na2MoO4 · 2H2O.
Production and Reactions
Sodium molybdate can be obtained by melting in sodium hydroxide at a temperature of 50-70 [deg.] C. with hydration method and by crystallization of MoO3 as a filter product.
MoO3 + 2NaOH + H2O? Na2MoO4 · 2H2O
When sodium is reacted with borohydride, it can be reduced as a lower molybdenum oxide.
Na2MoO4 + NaBH4 + 2H2O? NaBO2 + Moo2 + 2NaOH + 3 H2
It is used as an analytical reagent in the production of dyes, pigments (precipitant of serial pigments), as a buffering agent and also as an alkaloid as a catalyst.
It is widely used in the agricultural sector.Especially, broccoli and cauliflower are used to meet the deficiency of molybdenum, which is necessary for its growth.
It is used as corrosion inhibitor in metal industry.
Flame retardants are used for the water treatment agent and inhibitor of the cooling system that does not contain metal pollution.