phosphorus trioxide


: a deliquescent volatile crystalline compound P4O6 that is made by burning phosphorus in a limited supply of air or oxygen, that reacts with cold water to form phosphorous acid, and that decomposes with hot water; tetra-phosphorus hexoxide

called also phosphorous anhydride

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“Phosphorus trioxide.” Dictionary, Merriam-Webster, Accessed 30 Nov. 2023.

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