Phosphorus(III) oxide

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Phosphorus trioxide structure

Phosphorus(III) oxide, also known as phosphorus trioxide, 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[change | change source]

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[change | change source]

It is made by burning phosphorus in a little air. This is the source of many phosphorus compounds.

Uses[change | change source]

It can attach to certain transition metals.

Related pages[change | change source]