Haɗaɗɗen aluminum oxide, wanda kuma aka sani da alumina trihydrate ko kuma kawai hydrate, yana nufin farar fata, maras wari, crystalline foda wanda ya ƙunshi aluminum oxide da ruwa. Yana da dabarar sinadarai Al₂O₃•3H₂O da nauyin kwayoyin halitta na 156.0 g/mol. Ana amfani da hydrated aluminum oxide a matsayin mai hana wuta a cikin robobi, roba, da yadudduka, gami da kera yumbu da gilashi. Ana kuma amfani da shi azaman polishing da abrasive wakili, da kuma matsayin filler a daban-daban na masana'antu aikace-aikace.