Tungsten carbide Stability in Water

Due to the physical-chemical properties of tungsten carbide, it is expected that the substance exists as insoluble particles in water. The water solubility was experimentally determined according to the Directive 92/69/EEC, A.6 “water solubility，  comparable to OECD TG 105 (Cassella Aktiengesellschaft, 1995). Since less than 0.0001 g/1 tungsten carbide is soluble in water, the substance can be regarded as insoluble in water. Furthermore, the substance is also insoluble in water and dilute acids，but forms soluble salts in hot mixtures of HNO3 and HF .