In Lead Oxide category, all three Lead Oxides are subcategorized as Lead Sub Oxide (LSO), which is a mixture of Lead Oxide & free Lead powder and commercially called as Grey Oxide secondly reddish oxide of lead as Red Lead (Pb₃O₄) used as a pigment in paints, glass and ceramics thirdly a yellow Lead Oxide, also called Lead monoxide (PbO) and commercially called Litharge….