“Tradeasia International Pte. Ltd. established in 2002 and is headquartered in Singapore is a global chemical supplier and trading organization providing integrated chemical procurement services with a level of certainty and trust, which makes Tradeasia stands unique.It was setup with the sole intention of carrying out chemical distribution services especially to commodity industries in many parts of the world.”
Lead(II) oxide is the chemical compound with the formula PbO. Lead(II) oxide occurs in two forms: red, having a tetragonal crystal structure and yellow, having an orthorhombic crystal structure. Both forms occur naturally as minerals: the red form is known as litharge and the yellow form is known as massicot. While litharge is a tetragonal crystal, massicot is an orthorhombic crystal. In the tetragonal form the four Pb-O bonds have the same length, but in the orthorhombic two are shorter and two longer. When PbO occurs in tetragonal lattice structure it is called litharge; and when the PbO has orthorhombic lattice structure it is called massicot. The PbO can be changed from massicot to litharge or vice versa by controlled heating and cooling.