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Vapour pressure

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vapour pressure
Type of information:
not specified
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. This is a peer reviewed handbook that has been cited by the US EPA in the EPISUITE modelling program. It is therefore accepted that this data source is reasonably reliable.
Principles of method if other than guideline:
No method specified as data was obtained from handbook.
Type of method:
other: Not specified
Key result
Test no.:
25 °C
Vapour pressure:
319 mm Hg
The vapour pressure of 2,2-dimethylbutane is reported to be 319 mm Hg.
Executive summary:

The vapour pressure of 2,2-dimethylbutane is reported to be 319 mm Hg. No information on the primary source of this data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Description of key information

The vapour pressure of 2,2 -dimethylbutane is 42.5 kPa at 25 °C, respectively.

Supporting read across data is also available for Hydrocarbons, C6, isoalkanes, <5% n-hexane and Isohexane and this data is used for read across to 2,2 -dimethylbutane.

The typical vapour pressure is 25 kPa for Hydrocarbons, C6, isoalkanes, <5% n-hexane at 20°C

Key value for chemical safety assessment

Vapour pressure:
42.5 kPa
at the temperature of:
25 °C

Additional information