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Physical & Chemical properties

Vapour pressure

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vapour pressure
Type of information:
experimental study
Adequacy of study:
supporting study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
no guideline available
Principles of method if other than guideline:
Data from handbook or collection of data no data about the method was available.
GLP compliance:
Type of method:
other: no data
20 °C
Vapour pressure:
0.03 mm Hg
20 °C
Vapour pressure:
4 Pa
The vapour pressure of 2-ethylhexanoic acid is 4 Pa at 20 °C.
vapour pressure
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:

Description of key information

Key value for chemical safety assessment

Additional information

The vapour pressure of 2-ethylhexanoic acid, cerium salt is considered to be negligible based on the fact that

(i) the vapour pressure of 2-ethylhexanoic acid is already low: 4 Pa at 20 °C (Flick, E.W. (ed.). Industrial Solvents Handbook 5th ed. Noyes Data Corporation, Westwood, New Jersey, USA, 1998, p. 664)

(ii) the vapour pressure of the 2-ethylhexanoic acid anion is considered to be magnitudes lower since the ionic bond strength is higher compared with the Van-der-Waals interaction of the uncharged molecule.

Thus, further testing is not required, according to Regulation (EC) No 1907/2006, Annex XI, Section 1.1.