Calcium cyanamide is a chemical compound with the formula CaCN2. It is primarily used as a fertilizer in agriculture, providing essential nitrogen to plants. When applied to soil, it converts into ammonia and nitrate, which are vital nutrients for plant growth. In addition to its use in fertilizers, calcium cyanamide has applications in the production of cyanamide, a precursor for various chemicals. It is also utilized in the manufacturing of certain types of steel and as a herbicide. However, it must be handled with care due to its toxic properties.