This International Standard specifies a method for determining the vapor pressures (see note 1) of liquefied petroleum gases (see note 2) at test temperatures between 37.8 and 70 °C inclusive. NOTES 1 Information about the vapor pressure of liquefied petroleum gases under test temperature conditions between 37.8 and 70 °C is very useful in solving the problems of selection of storage containers, transport and equipment in which LPG is used to ensure safe handling of such products. 2 For the purposes of this test method, liquefied petroleum gases are defined as mixtures of hydrocarbons with a narrow boiling range, consis ing essentially of propane or propylene or a mixture of these products, butanes or butenes or a mixture of these products, or a mixture of the two, in which the content of hydrocarbons whose boiling point is greater than 0 "C is less than 5% WIV) and whose pressure of steam at 37.8 C is not greater than approximately 1,550 kPa1'.
NBN T 52-108-1979 history
1979NBN T 52-108-1979 Liquefied petroleum gases - Determination of vapour pressure-LPG method