烧碱 Traditional form: 燒鹼 Pinyin (reading): shāojiǎn Definitions: caustic soda NaOH Characters: 烧 - to burn, to bake; to heat, to roast 碱 - alkaline, alkali, lye, salt Traditional characters: 燒 - to burn, to bake; to heat, to roast 鹼 - alkaline, alkali, lye, salt