Phosphorus trioxide
Phosphorus trioxide, also known as phosphorus(III) oxide, is a chemical compound. Its chemical formula is P2O3 or P4O6. It contains phosphorus in its +3 oxidation state. It contains phosphorus and oxide ions.
Properties
It is a white, waxy solid that can absorb water. It reacts with water to make phosphorous acid. It reacts with hydrochloric acid to make phosphorus trichloride and phosphorous acid. It is a reducing agent. It is toxic and has a garlic-like odor.
Preparation
It is made by burning phosphorus in a little air. This is the source of many phosphorus compounds.
Uses
It can attach to certain transition metals.
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