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Vapour pressure

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Description of key information

The vapour pressure was determined to be 25 Pa at 20 °C, 35 Pa at 25 °C and 143 Pa at 50 °C, respectively.

Key value for chemical safety assessment

Vapour pressure:
25 Pa
at the temperature of:
20 °C

Additional information

A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item. A vapour pressure curve with 9 data points was measured over a pressure range between 14 to 200 hPa. For control 3 measuring points were evaluated with decreasing pressure. The vapour pressure was measured in the temperature range of 98.5 to 180.3 °C. From the measured data points of the vapour pressure curve the constants A, B and C of the Antoine equation was derived and the vapour pressure of the test item as calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C, according to Regulation EC No. 440/2008 Method A.4. The vapour pressure was determined to be 25 Pa at 20 °C, 35 Pa at 25 °C and 143 Pa at 50 °C, respectively. No observations were made which cause doubt on the validity of the outcome of the study.

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