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Vapour pressure

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Description of key information

The vapour pressure of the substance is determined to 53.65 hPa at 20°C, 69.24 hPa at 25 °C and 214.23 hPa at 50 °C.

Key value for chemical safety assessment

Vapour pressure:
53.65 hPa
at the temperature of:
20 °C

Additional information

Two studies were conducted to determine the vapour pressure. In the first study (BASF AG 1992, BRU 93.225) the vapour pressure was determined using the dynamic method according to OECD TG 104. The vapour pressure curve was logged. Using the regression analysis the coefficients for the Antoine equation was determined. The mean deviation of the Antoine equation was determined to be 0.30 % and thus regarded as valid. The vapour pressure at 20 °C was calculated to be 53.65 hPa and was calculated to be 214.23 hPa at 50 °C respectively. In the second study (BASF 1994, SIK-Nr. 94/0126) using the dynamic method the vapour pressure was determined to be 51 hPa at 20 °C and 208 hPa at 50 °C respectively.

In addition the Physprop Database reports the vapour pressure to be 65.46 at 25 °C. The GESTIS database reports the vapour pressure to be 56 hPa at 20 °C and 215 hPa at 50 °C. All reported values are in the same range. Thus as the experimental determined vapour pressure was supported by the literature value, 53.65 hPa at 20°C was chosen as key value. 

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