单词	sodium thiosulfate
释义	sodium thiosulfate noun : a hygroscopic crystalline salt Na2S2O3 used especially as a photographic fixing agent and a reducing or bleaching agent called also fixer, hypo Word History First Known Use 1885, in the meaning defined above Medical Definition sodium thiosulfate noun : a hygroscopic crystalline salt Na2O3S2 that is used as a fixing agent in photography, as a reducing agent and bleaching agent, in chemical analysis for the titration of iodine, and in medicine as an antidote in poisoning especially by cyanides and as an antifungal agent called also hypo, sodium hyposulfite
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