Ytterbium hydride is a gray solid with a metallic luster and is a ferromagnetic compound. It is a compound of Ytterbium and Hydrogen, and is usually prepared by reacting pure metal ytterbium with hydrogen. Ytterbium hydride reacts with oxygen in air to form ytterbium oxide, so it needs to be stored and disposed of properly. Ytterbium hydride can be used as a material for the study of metal hydrides, and can also be used as an additive in alloys to change the properties of the material. However, ytterbium hydride is a combustible substance, and care should be taken to avoid exposure to air when handling or storing, and appropriate protective equipment should be worn.