CAS 13499-05-3: Hafnium tetrachloride

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Hafnium(IV) chloride is used as a precursor for catalyst involved in the Ziegler-Natta polymerization of propylene. It is an effective Lewis acid for various applications in organic synthesis viz alkylation of ferrocene. Further, it increases the rate and control of 1,3-dipolar cycloadditions. It is also used to prepare hafnium dioxide and hafnium silicate, which is used as high-k-dielectrics in the production of integrated circuits. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Hafnium(IV) chloride

Hafnium(IV) chloride, sublimed grade (99.9+%-Hf, <0.05% Zr)

Tetrachlorohafnium (TcHfCl4) is an inorganic compound that is a hydrochloric acid salt of hafnium tetrachloride. TcHfCl4 is a solid catalyst and reactive, which has been used to synthesize polymers with carbonyl groups and silicon. TcHfCl4 is also able to produce copolymers with hydrocarbon groups, as well as react with acid solutions. The average particle diameter of this catalyst ranges from 2 nm to 10 nm.

Hafnium(IV) chloride, sublimed grade (99.9+%-Hf, <1.0% Zr)

Applications Tetrachlorohafnium is a useful inorganic catalyst and reagent, and has been used in the catalytic transfer hydrogenation of biomass-based furfural. Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package References Li, H.; et al.: Catal. Today (2018).

Hafnium chloride tetrahydrofuran complex is an efficient catalyst for the Diels-Alder cycloadditions, Ziegler-Natta polymerization of alkenes. It is used as control rods in nuclear reactors and in manufacture of light bulb filaments. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.