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Physical & Chemical properties

Vapour pressure

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Description of key information


Key value for chemical safety assessment

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

Additional information

According to Annex VII of the REACH Regulation 1907/2006, Column 2, the study does not need to be conducted if the melting point is above 300°C. If the melting point is between 200°C and 300°C, a limit value based on measurement or a recognised calculation method is sufficient. Based on the differential ScanningCalorimetry, the decomposition of the substance starts at 262 °C.

Below 573 K (ca 300 °C) no melting point was detected.

Based on the OECD Guideline 104, the calculated values of the vapour pressure can be used:

- for deciding which of the experimental methods is appropriate,

- for providing an estimate or limit value in cases where the experimental method cannot be applied due to technical reasons (including where the vapour pressure is very low, e.g., less than 10-3 Pa).

The prediction of MPBPWIN™of EPI Suite v 4.11 of U.S Environmental Protection Agency * estimate ( Modified Grain method):

VP(mm Hg,25 deg C): 4.3E-038 (Modified Grain method)

VP (Pa, 25 deg C) : 5.74E-036 (Modified Grain method)

The predicted value of vapour pressure is out of the recommended range of the pressures of the methods reported in the OECD Guideline (10^-5 – 10^5 Pa), therefore the lowest value accepted by EUSES has been reported for a complete Risk assessment (0.0000001 Pa).

* US EPA. [2016]. Estimation Programs Interface Suite™ for Microsoft® Windows, v 4.11 or insert version used]. United States Environmental Protection Agency, Washington, DC, USA.