 Tributyl phosphate

A neutral oxygen-donor extractant, $\mathrm{OP}(\mathrm{OBu}{)}_3$, often abbreviated TBP. It can solvate metal nitrate species in solvent extraction. Selectivity depends on acidity, metal oxidation state, diluent and subsequent stripping conditions.

Tributyl phosphate (TBP) is an organic compound with the chemical formula \( \text{C}_{12}\text{H}_{27}\text{O}_4\text{P} \). It is an ester formed from the reaction of phosphoric acid with butanol. TBP appears as a colorless to pale yellow liquid and has a characteristic odor.