The light burned magnesium oxide or Caustic-Calcined Magnesium Oxide is a form of Heavy Magnesium Oxide (MgO) and a reactive grade of magnesium oxide that has been calcined at temperatures ranging from 700ºC – 1000ºC. HPSR’s high purity light burned magnesium oxide products have a wide margin of reactivity and are an essential component in a number of agricultural, environmental, construction, and industrial applications. We have carefully studied the requirements of various applications of Caustic-Calcined Magnesium Oxide and have formulated the grade of our products accordingly to suit the exact need of the customer.