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Physical & Chemical properties

Vapour pressure

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vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1 April 2010 to 7 January 2011
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study carried out in compliance with an internationally recognised guideline
according to guideline
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
Type of method:
effusion method: by loss of weight or by trapping vaporisate
25 °C
Vapour pressure:
20.6 Pa
25 °C
Vapour pressure:
18.2 Pa
25 °C
Vapour pressure:
19.8 Pa

The mean vapour pressure is 20 Pa at 25°C and the coefficient of variation is 6.1%.

The vapour pressure of the substance was found to be 20 Pa at 25°C.

Description of key information

The vapour pressure of the substance was determined by an effusion weight loss method to be 20 Pa at 25°C.

Key value for chemical safety assessment

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

Additional information

A vapour pressure determination was performed by Mitsui Chemicals, Inc., (2011, Report No.: ESD-2010 -020). The vapour pressure was determined according to OECD Method 104 and EU Method A4 and was considered to be reliable. DMI was found to have a vapour pressure 20 Pa at 25°C. This vapour is low for a liquid, for example, when compared to the vapour pressure of water which is 3169.0 Pa at 25°C (CRC Handbook of Chemistry and Physics, 73rd Edition, 6 -14).