According to the chemical composition, the amount of CaO was 54.5%. However, Cardoso et al. (2009), who studied characteristics of carbide lime (CCR) and industrial hydrated lime, found Cao at the levels of 70.9 and 71.2%, respectively. Arandigoyen and Alvarez (2007) also showed the amount of CaO in industrial hydrated lime was 68.53%.