Boiling Point 20
Boiling Point 20 :
The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure. Note: For purposes of defining the boiling point, atmospheric pressure is considered to be 14. 7psia (760 mm Hg). For mixtures that do not have a constant boil-ingpoint, the 20 percent evaporated point of a distillation performed in accordance withASTMD86, Standard Test Method for Distillation of Petroleum Products at At mospheric Pressure, is considered to be the boiling point. NFPA 30, 2003 ed
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