Sodium tungstate is white glossy flake crystal or crystalline powder, soluble in water, insoluble in ethanol, slightly soluble in ammonia. Weathering in the air. When heated to 100 ℃, it loses crystal water and becomes anhydrous substance. It reacts with strong acids (except hydrofluoric acid) to form water-insoluble yellow tungstic acid, reacts with phosphoric acid or phosphate to form phosphotungstic heteropoly acid complex, reacts with tartaric acid, citric acid, oxalic acid and other organic acids to form corresponding organic acid complex.

Tungsten trioxide reacts with sodium hydroxide, or tungsten concentrate is autoclaved with sodium hydroxide to produce sodium tungstate solution. After purification, filtration, ion exchange and other processes, impurity components are separated, and then sodium tungstate product is obtained by evaporation crystallization.