2-Propenoic acid, 2-methyl-, tetracosyl ester, branched

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

9 February 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: ASTM D2879 - 97 (2007) Standard Test Method for Vapour Pressure-Temperature Relation ship and Initial Decomposition Temperature of Liquids by Isoteniscope.

Deviations:

yes

Remarks:

A digital electronic pressure gauge and not a mercury manometer (as stipulated in ASTM D2879 - 97 2007) was used for pressure measurement.

GLP compliance:

no

Type of method:

isoteniscope

Key result

Temp.:

20 °C

Vapour pressure:

< 0.75 mm Hg

	Vapour Pressure at 20°C/ mm Hg
Run 1	< 0.75
Run 2	< 0.75
Run 3	< 0.75
Average	< 0.75

Conclusions:

A vapour pressure < 0.75 mmHg at 20°C was determined for 2-Propenoic acid, 2-methyl-, tetracosyl ester(branched).

Executive summary:

The ASTM D2879 - 97 Standard Test Method for Vapour Pressure-Temperature Relationship and Initial Decomposition Temperature of Liquids by Isoteniscope was followed to determine the vapour pressure of test substance 2-Propenoic acid, 2-methyl-, tetracosyl ester(branched). The test substance was determined to have a vapour pressure < 0.75 mmHg at 20°C based on three runs.

Description of key information

The ASTM D2879 - 97 Standard Test Method for Vapour Pressure-Temperature Relationship and Initial Decomposition Temperature of Liquids by Isoteniscope was followed to determine the vapour pressure of test substance 2-Propenoic acid, 2-methyl-, tetracosyl ester(branched). The test substance was determined to have a vapour pressure < 0.75 mmHg at 20°C based on three runs. This is equivalent to a vapour pressure < 100 Pa at 20°C.

Key value for chemical safety assessment

Vapour pressure:

100 Pa

at the temperature of:

20 °C