Used as a catalyst in organic synthesis, particularly in the production of specialty chemicals and fine pharmaceuticals. Its solubility in n-butanol makes it suitable for homogeneous reaction systems where controlled Lewis acidity is required. Applied in chlorination and alkylation processes due to its ability to transfer chloride ions effectively. Also utilized in the development of tantalum-containing materials for electronic components through solution-based deposition techniques. Handling requires care due to moisture sensitivity and corrosive byproducts upon hydrolysis.