Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.    My periodic table poster is now available! Quicklime. Quicklime is calcium oxide (CaO). It used to be employed to make light. Limelight. These days its main applications are in mortar (it turns into limestone on exposure to air and water), and in disposing of bodies. Source: eBay seller lauram300 Contributor: Theodore Gray Acquired: 8 May, 2007 Text Updated: 9 May, 2007 Price: $36 Size: 1" Composition: CaO