Vapour pressure
Contributors: Organisation for Economic Co-operation and Development
Series: OECD guidelines for the testing of chemicals -- 104
Publisher: Organisation for Economic Co-Operation and Development
Published: 2006
Place of publication: Paris
Language: eng
Format: [electronic resource]
Number of pages: 18
ISBN-13: 9786610607525; 9789264069565
Subjects: Toxicology; Chemical tests and reagents; Handbooks, manuals; Standards
Description: This Test Guideline describes eight methods to measure the vapour pressure. Each one can be applied in different vapour pressure ranges. The vapour pressure (in Pascal) of a substance is defined as the saturation pressure above a solid or liquid substance and is determined at various temperatures (in Kelvin). The methods used are: the dynamic method (Cottrell’s method), the static method, the isoteniscope Method, the effusion method: vapour pressure balance, the effusion method: Knudsen cell, the effusion method: isothermal thermogravimetry, the gas saturation method and the spinning rotor method. The vapour pressure from any of the preceding methods should be determined for at least two temperatures. Three or more are preferred in the range 0 to 50°C, in order to check the linearity of the vapour pressure curve. In case of Effusion methods and Gas saturation method, 120 to 150 °C is recommended for the measuring temperature range instead of 0 to 50°C.
Notes: Title from e-book title screen (viewed November 27, 2007).

Also available in print.