chemical compound

Phosphine is a chemical compound. Its chemical name is phosphorus hydride. Its chemical formula is PH3. It is also called phosphane and phosphamine. It contains phosphide and hydrogen ions.

Phosphine structure

Properties change

It is a colorless, flammable gas. It is highly toxic; it can easily kill, even when concentration levels are low. It smells like fish. It can ignite without a spark. When it burns, it makes a white cloud of phosphorus(V) oxide, which is irritating.

Preparation change

It is made when hypophosphites and phosphites are heated. It is also made when white phosphorus reacts with warm alkali.

Uses change

The gas is used for pest control. It is also used in making semiconductors.

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