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Fused tungsten carbide (EC name: reaction mass of ditungsten carbide and tungsten carbide) is a grey/black crystalline solid, with a very high melting point ranging from 2785 - 2920 °C, and a density of 15.63 - 15.7 g/cm3, and a water solubility at pH=8.5 of 1.04 mg/L (at a 100 mg/L load after 24 hrs.)

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