MoO4, or molybdate, is a chemical compound composed of molybdenum and oxygen. It typically appears as a white or yellowish solid and is often used in various industrial applications, including catalysts and pigments. Molybdate ions are important in biochemical processes and can be found in some minerals. In addition to its industrial uses, MoO4 plays a role in agriculture as a micronutrient for plants. Molybdenum is essential for nitrogen fixation in legumes, helping them convert atmospheric nitrogen into a usable form. This makes MoO4 significant for enhancing soil fertility and crop yields.