Sodium Tungstate Dihydrate

Sodium Tungstate Dihydrate

Sodium tungstate, colorless crystal or white crystalline powder. Weathering in dry air, the crystallization of water at 100 degrees to become anhydrous. Soluble in water, insoluble in ethanol, slightly soluble in liquid ammonia, a weak alkaline aqueous solution. Relative density 3.23 ~ 3.25. Melting point 698 DEG C (anhydrous). In case of acid decomposed into water soluble tungstate (H2WO4).

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Grade classification

Element Mo As Fe Cu Al SO4 Cl NO3
Impurities 0.02 0.075 0.005 0.005 0.0075 0.1 0.1 0.1
(%max)

◆WO3:68%min
◆Packing: In iron drum of 50 or 100kg net each
◆Remarks: Any special requirement to the specifications can be discussed