Fire extinguishers contain different chemicals, depending on the application. Handheld extinguishers, which are commonly sold at hardware stores for use in the kitchen or garage, are pressurized …
Fire extinguishers of this type contain an ammonium phosphate base agent. Multipurpose agents are used in exactly the same manner as ordinary dry chemical agents on Class B fires. For use on Class A fires, the multipurpose agent has the additional characteristic of softening and sticking when in contact with hot surfaces.
What chemicals are used in a fire extinguisher? – VariEx
The chemical that a fire extinguisher contains depends on the purpose for which it is used. The most common chemical is Sodium Bicarbonate used in the fire extinguisher, and by heating up, it gives carbon dioxide. But today, Potassium Bicarbonate is widely used in fire extinguishers due to its effectiveness as compared to Sodium Bicarbonate.
A fire extinguisher is an active fire protection device used to extinguish or control small fires, often in emergency situations. It is not intended for use on an out-of-control fire, such as one which has reached the ceiling, endangers the user (i.e., no escape route, smoke, explosion hazard, etc.), or otherwise requires the equipment, personnel, resources and/or expertise of a fire brigade. Typically, a …
People Also Ask a fire extinguisher contains
What is the chemical composition of fire extinguisher?
Other types of extinguishers (dry powder fire extinguisher) contain a powder such as potassium bicarbonate (KHCO3), liquid water, and an evaporating fluorocarbon (most commonly used chemical is the bromochlorodifluoromethane (CF2ClBr) referred to as halon 2111) to extinguish the fire.
How does a Class A fire extinguisher work?
For use on Class A fires, the multipurpose agent has the additional characteristic of softening and sticking when in contact with hot surfaces. In this way, it adheres to burning materials and forms a coating that smothers and isolates the fuel from air.
What are the fire extinguishing agents used in fire extinguishers?
The fire extinguishing agent used in these devices is a powder composed of very small particulates. Types of agents available include sodium bicarbonate base and potassium bicarbonate base.
What is a cartridge-operated fire extinguisher?
Cartridge-operated extinguishers contain the expellant gas in a separate cartridge that is punctured prior to discharge, exposing the propellant to the extinguishing agent. This type is not as common, used primarily in areas such as industrial facilities, where they receive higher-than-average use.
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How Fire Extinguishers Work Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher