Tris(cyanoethyl)phosphine is the organophosphorus compound with the formula P(CH2CH2CN)3.

It is white solid that is air stable, which is unusual for a trialkylphosphine.

It is prepared by the hydrophosphination of acrylonitrile with phosphine.

[1] The compound has been the subject of much research.

For example, it is an effective reagent for the desulfurization of organic disulfides.