Iron(II) chloride, also known as ferrous chloride, is a chemical compound with the formula FeCl2. It consists of iron in the +2 oxidation state and two chloride ions. This compound typically appears as a greenish or yellowish solid and is soluble in water, forming a pale green solution. Iron(II) chloride is used in various applications, including water treatment, as a coagulant, and in the production of other iron compounds. It can also serve as a reducing agent in chemical reactions. Proper handling is essential, as it can be harmful if ingested or inhaled.