Titanium phosphide (TiP) is an inorganic chemical compound of titanium

Titanium

Titanium is a chemical element with the symbol Ti and atomic number 22. It has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver color....

 and phosphorus

Phosphorus

Phosphorus is the chemical element that has the symbol P and atomic number 15. A multivalent nonmetal of the nitrogen group, phosphorus as a mineral is almost always present in its maximally oxidized state, as inorganic phosphate rocks...

. Normally encountered as a grey powder, it is high melting and a metallic conductor. It is not attacked by common acids or water. Its physical properties stand in contrast to the group 1 and group 2 phosphides that contain the P³⁻ anion (such as Na₃P

Sodium phosphide

Sodium phosphide, Na3P, is a black, ionic salt containing the alkali metal sodium and the phosphide anion. Na3P is a source of the highly reactive phosphide anion...

), which are not metallic and are readily hydrolysed. Titanium phosphide is classified as a "metal-rich phosphide", where extra valence electrons from the metal are delocalised.

Titanium phosphide can be prepared by the reaction of TiCl₄ and PH₃.

There are other titanium phosphide phases, including Ti₃P, Ti₂P, Ti₇P₄, Ti₅P₃, and Ti₄P₃.

Titanium phosphide should not be confused with titanium phosphate or titanium isopropoxide, both of which are sometimes known by the acronym TIP.