a stabilized sodium percarbonate particle includes a sodium percarbonate particle having at least one coating layer thereon , wherein the at least one coating layer includes a silicate ; magnesium sulfate ; and an alkali metal salt selected from the group consisting of alkali metal carbonates , alkali metal bicarbonates and alkali metal sulfate . the present sodium percarbonate particle is good in solubility and is excellent in its formulation stability with detergent .