Tetrafluoromethane, CF4 Specialty Gas

Tetrafluoromethane (CF4, R-14) Gas

Tetrafluoromethane (CF4) is a crucial component in high voltage circuit breakers, particularly when combined with sulfur hexafluoride (SF6) in varying ratios, typically around 10% CF4 to 90% SF6. This gas mixture offers superior electrical insulation and arc-quenching properties, essential for maintaining the integrity and safety of high voltage systems. CF4 enhances the dielectric strength of the mixture, allowing it to withstand significant electrical stresses without breaking down. This property is vital for preventing electrical discharges and ensuring the reliable operation of circuit breakers under high voltage conditions. Additionally, CF4’s thermal stability and chemical inertness contribute to the longevity and reliability of circuit breakers, reducing the need for frequent maintenance and replacement.

In cold weather climates, CF4 provides added benefits by improving the performance of the gas mixture at low temperatures. Ratios can be adjusted to around 20% CF4 to 80% SF6, or even higher, to ensure optimal performance. CF4 helps maintain high dielectric strength and prevents the liquefaction of SF6, ensuring the mixture remains gaseous and effective even in extreme cold. This capability is crucial for the reliable operation of high voltage circuit breakers in harsh environmental conditions. By using CF4 in the gas mixture, the overall environmental impact is also reduced, as it allows for a decrease in the volume of SF6 required. Overall, CF4 is indispensable in enhancing the safety, efficiency, and environmental sustainability of high voltage circuit breakers.

Tetrafluoromethane is also used in semiconductor fabrication to etch the polysilicon, silicon dioxide, and silicon nitride wafers. Concorde can provide a high purity tetrafluoromethane gas for these purposes resulting in a superior and more refined control of the etching process, as well as better dimensional and profile control.

CF4 Safety Requirements

Safety Requirements: The cryogenic CF4 liquid will rapidly boil to gas at standard temperatures and pressures. The liquefied gas can cause frostbite to any contaminated tissue. The main health hazard of releasing this gas is asphyxiation by oxygen displacement (see SDS for further information).

CF4, Tetrafluoromethane Specifications pdf.

CF4 Tetrafluoromethane SDS pdf.