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 yellow-green solid and is soluble in water, forming a greenish solution. Iron(II) chloride is commonly used in various applications, including water treatment, as a coagulant, and in the production of pigments. It can also serve as a reducing agent in chemical reactions. Safety precautions are necessary when handling it, as it can be corrosive and harmful if ingested or inhaled.