单词	phosphorous acid
释义	phosphorous acid noun : a deliquescent crystalline acid H3PO3 used especially as a reducing agent and in making phosphites Example Sentences Recent Examples on the Web Sodium hydroxide and phosphorous acid are used to remove gums and other undesirable compounds in oil, according to Dansby. Sudiksha Kochi, USA TODAY, 21 Mar. 2022 Word History First Known Use 1788, in the meaning defined above Medical Definition phosphorous acid noun : a deliquescent crystalline acid H3PO3 used especially as a reducing agent and in making phosphites
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