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phosphorous acid
noun
Chemistry.
- a colorless, crystalline, water-soluble acid of phosphorus, H 3 PO 3 , from which phosphites are derived.
phosphorous acid
noun
- Also calledorthophosphorous acid a white or yellowish hygroscopic crystalline dibasic acid. Formula: H 3 PO 3 Systematic namephosphoric acid
- any oxyacid of phosphorus containing less oxygen than the corresponding phosphoric acid
phosphorous acid
/ ŏ′fər-ə,ŏ-fôr′ə /
- A white or yellowish crystalline solid used as a reducing agent. It is hygroscopic (easily absorbs moisture from the atmosphere). Chemical formula: H 3 PO 3 .
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51Թ History and Origins
Origin of phosphorous acid1
First recorded in 1785–95
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Example Sentences
Examples have not been reviewed.
The white fumes of phosphorous acid floated out into the air, and began to diffuse themselves through the hall towards the ventilation outlets at the sides and rear.
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I distilled two parts of finely pulverised manganese with one part of the phosphorous acid of urine in the same way as is indicated in the preceding paragraph, I likewise obtained fire-air.
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The important acids of phosphorus are the following: H3PO3 phosphorous acid.
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Bodies absorbing oxygen, as sulphurous acid, phosphorous acid, and alcohols, decolorize it; under the influence of oxygen its color is restored.
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