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 sodium hydrogencarbonate , some are pressurized with nitrogen or oxygen to propel a fire squelching agent to the fire , non-flammable carbon dioxide gas, mono ammonium phosphate, potassium bicarbonate
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 pressurized  nitrogen or carbon dioxide (CO2) to propel a stream of fire-squelching agent to the fire. potassium bicarbonate (KHCO3), liquid water, an evaporating fluorocarbon or the propelling agent itself. The most effective and common fluorocarbon used until recently for this application had been bromochlorodifluoromethane (CF2ClBr), referred to as halon 1211
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