Some properties of ethylene and triethylene glycol esters as pearling agent have been studied. Glycol esters as commercially available pearling agents are composed of many compounds as symmetric (16-EG-16 and 18-EG-18 etc.), asymmetric (16-EG-18 and 14-EG-18 etc.) diesters and monoesters. We found that pearl appearling temperature depends on melting point of glycol diesters and vanishing temperature is equal to them. Viscosity and foaming height were affected with additive of each glycol esters, except for asymmetric diesters. Following conculusion could be established that asymmetric glycol diesters, especially 16-EG-18 and 16-TEG-18 have more desirable properties than symmetric ones.
