MOLYBDENUM, a chemical element, is a hard, high-melting (refractory) high-density dark gray metal or black powder. Insoluble in water. Used to make structural alloys; used as a catalyst. Molybdenum dust and fumes can irritate the eyes and respiratory tract.;DryPowder; DryPowder, OtherSolid; DryPowder, PelletsLargeCrystals, OtherSolid; OtherSolid; PelletsLargeCrystals;SILVER-WHITE LUSTROUS METAL OR DARK GREY POWDER.;Dark gray or black powder with a metallic luster.;Dark gray or black powder with a metallic luster.;Dark gray or black powder with a metallic luster.
