Hypo
Sodium thiosulfate (Na2S2O3), also spelled sodium thiosulphate, is a colorless crystalline compound that is more familiar as the pentahydrate, Na2S2O3·5H2O, an efflorescent, monoclinic crystalline substance also called sodium hyposulfite or “hypo.”
It is used as an antidote to cyanide poisoning.
Other uses include management of extravasations during chemotherapy, in foot baths for prophylaxis of ringworm, and as a topical antifungal agent for tinea versicolor.
