ʻO ka Caustic Soda he alkali ikaika me ka corrosiveness ikaika, ma ke ʻano o nā flakes a i ʻole nā poloka, hiki ke hoʻoheheʻe ʻia i ka wai (exothermic ke hoʻoheheʻe ʻia i ka wai) a hana i kahi hopena alkaline, a me ka deliquescent.
Ma ka moe kolohe, maʻalahi ke komo ʻana i ka mahu wai (deliquescent) a me carbon dioxide (deterioration) i ka lewa, a hiki ke hoʻohui ʻia me ka waika hydrochloric e nānā inā ua deteriorated.