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phosphorous acid

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
phosphorous acid
n.
A white or yellowish hygroscopic crystalline solid, H3PO3, used as a reducing agent and to produce phosphite salts.
phosphorous acid
n
1. (Chemistry / Elements & Compounds) a white or yellowish hygroscopic crystalline dibasic acid. Formula: H3PO3 Systematic name phosphoric acid Also called orthophosphorous acid
2. (Chemistry / Elements & Compounds) any oxyacid of phosphorus containing less oxygen than the corresponding phosphoric acid
phosphorous acid  (fsfr-s, fs-fôrs)
A white or yellowish crystalline solid used as a reducing agent. It is hygroscopic (easily absorbs moisture from the atmosphere). Chemical formula: H3PO3.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.phosphorous acid - a clear or yellow monobasic acid (H3PO2)
hypophosphorous acid, orthophosphorous acid
oxyacid, oxygen acid - any acid that contains oxygen


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