ABSTRACT The synthesis of several ricinoleicacid glycol ether esters by high-pressure microwave radiation is described. Ricinoleicacid which is from castoroil reacted fastly with glycol ethers in the presence of NaHSO4 · H2O and dichloromethane (DCM) in special microwave reactor. The influences of reaction factors such as catalyst and solvent type, reaction temperature, and time were investigated