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Gas HFC 227ea
Gas HFC 227ea, FM 200
1,1,1,2,3,3,3-Heptafluoropropane, also called heptafluoropropane, HFC-227 or HFC-227ea (ISO name), as well as apaflurane (INN), is a colourless, odourless gaseous halocarbon commonly used as a gaseous fire suppression agent. 

Its chemical formula is CF3-CHF-CF3, or C3HF7. With a boiling point of −16.4 °C, it is a gas at room temperature. It is slightly soluble in water (260 mg/L). HFC-227ea finds use in fire suppression systems in data processing and telecommunication facilities, and in protection of many flammable liquids and gases. 

HFC-227ea falls in the category of Clean Agents and is governed by NFPA 2001 – Standard for Clean Agent Fire Extinguishing Systems. The HFC-227ea fire suppression agent was the first non-ozone depleting replacement for Halon 1301 In addition, 

HFC-227ea leaves no residue on valuable equipment after discharge. HFC-227ea contains no chlorine or bromine atoms, presenting no ozone depletion effect. Its atmospheric lifetime is approximated between 31 and 42 years. It leaves no residue or oily deposits and can be removed by ventilation of the affected space.