Which of the following types of halon is found in portable extinguishers and is stored as a liquid?

Question

Options

• AHalon-f
• BHalon 1301
• CHalon 11
• DHalon 1211

• A
  2% (1)
• B
  8% (4)
• C
  2% (1)
• D
  88% (46)

Explanation

Halon 1211 (bromochlorodifluoromethane) is the correct answer because it exists as a liquefied gas at room temperature, allowing it to be stored compactly in portable hand-held extinguishers. It discharges as a combination of liquid and vapor, making it effective for direct application to a fire.

Halon 1301 (bromotrifluoromethane) is a gas-phase agent primarily used in fixed total-flooding systems (e.g., server rooms), not portable extinguishers - it vaporizes too readily for handheld use. Halon 11 is not a valid halon designation; real halons follow a 4-digit numbering convention. Halon-f is similarly fictitious and does not exist in fire suppression standards.

Memory tip: Think "1211 = hand-held, in-your-hand" - the extra digit-complexity mirrors its more versatile, portable nature, while 1301's simpler profile fits stationary flood systems.

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