Definition

Noun: - A colorless, odorless, non-toxic, and non-flammable inorganic gas. It is chemically inert under most conditions and is an extremely potent greenhouse gas. Its primary industrial use is as an insulating and arc-quenching medium in high-voltage electrical equipment.

Usage

• Sulphur hexafluoride is used as a dielectric insulator in electrical switchgear.
• Due to its high global warming potential, the release of sulphur hexafluoride into the atmosphere is a significant environmental concern.
• The stability of sulphur hexafluoride makes it useful in various scientific and medical applications.

Examples

• The technician checked the circuit breaker for leaks of sulphur hexafluoride.
• Sulphur hexafluoride has a global warming potential thousands of times greater than carbon dioxide.
• In the laboratory, they used sulphur hexafluoride to test for acoustic leaks.

Advanced Usage

• "SF₆": This is the standard chemical formula for sulphur hexafluoride, commonly used in scientific and engineering contexts.
  • The new regulations aim to reduce emissions of SF₆ from substations.

Variants and Related Words

• Sulfur hexafluoride: The American English spelling variant. The word has the same meaning and usage.
  • The manual specified the purity grade for the sulfur hexafluoride.

Synonyms

• SF₆: (Chemical formula) Used interchangeably with the full name in technical writing.
• Elegas: (A trade name) A brand name for medical-grade sulphur hexafluoride used as an ultrasound contrast agent.

Notes on Meaning

• While primarily a technical term in chemistry and electrical engineering, the term is most frequently encountered in discussions about industrial applications and environmental impact due to its powerful greenhouse gas properties. It is not typically used in everyday conversation.

Noun

1. a colorless gas that is soluble in alcohol and ether; a powerful greenhouse gas widely used in the electrical utility industry