Hafnium oxide (HfO2)(CAS: 12055-23-1)

Hafnium oxide (CAS: 12055-23-1) is a white powder with a tetragonal crystal structure. It has a molecular weight of approximately 216.24 g/mol and is insoluble in water. Chemically, it is very stable and has low reactivity, particularly with strong acids and bases. It has high refractive index and dielectric constant, making it useful in various applications.

Hafnium oxide (CAS: 12055-23-1) is commonly synthesized through thermal decomposition of hafnium(IV) fluoride (HfF4) or hafnium(IV) chloride (HfCl4) at high temperatures. Other methods include precipitation from aqueous solutions and sol-gel techniques. The process involves controlled heating and cooling to achieve a high yield and selectivity.

Hafnium oxide (CAS: 12055-23-1) is widely used in the electronics industry, particularly in semiconductor devices for its high dielectric constant and thermal stability. It is also utilized in optoelectronics, coating applications, and in the aerospace and automotive industries for its high refractive index and mechanical strength.

When handling hafnium oxide (CAS: 12055-23-1), it is important to wear appropriate personal protective equipment (PPE), including gloves, goggles, and a lab coat. Handle in a well-ventilated area or a fume hood to avoid inhalation. Dispose of any waste according to local regulations and refer to the Safety Data Sheet (SDS) for specific guidelines.