O jẹ iru agbo-ara inorganic, ti a tun mọ ni omi onisuga caustic, omi onisuga caustic, omi onisuga caustic, soda hydroxide ni ipilẹ to lagbara, ibajẹ pupọ, o le ṣee lo bi didoju acid, pẹlu aṣoju boju-boju, aṣoju ojoriro, aṣoju boju-boju ojoriro, aṣoju awọ, oluranlowo saponification, oluranlowo peeling, detergent, ati bẹbẹ lọ, lilo naa gbooro pupọ.