[′sōd·ē·əm ‚thī·ə′sī·ə‚nāt] (inorganic chemistry) NaSCN A poisonous, water- and alcohol-soluble, deliquescent, white powder; melts at 287°C; used as an analytical reagent, solvent, and chemical intermediate, and for rubber treatment and textile dyeing and printing. Also known as sodium sulfocyanate.