Oxirane, 2-methyl-, (2R)-

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2002

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: The result was obtained from a collection of reliable data which has been subject to peer-review and in which the original data sources are traceable.

Data source

Reference

Reference Type:

review article or handbook

Title:

Unnamed

Year:

2002

Materials and methods

Principles of method if other than guideline:

Experimental measurement (data is taken from a reliable handbook, information about the methodology is not available).

GLP compliance:

no

Type of method:

other: From a handbook

Test material

Test material information

Constituent 1

Reference substance name:

propylene oxide

IUPAC Name:

propylene oxide

Constituent 2

Reference substance name:

Methyloxirane

EC Number:

200-879-2

EC Name:

Methyloxirane

Cas Number:

75-56-9

IUPAC Name:

2-methyloxirane

Details on test material:

Test material was racemate from both R(+) and S(-) propylene oxide. This endpoint is not measured / determined with enantio-selective sensors.
Therefore the R(+) value is identical to the racemate endpoint.

Results and discussion

Boiling point

Boiling pt.:

34.1 °C

Atm. press.:

101.325 kPa

Any other information on results incl. tables

A value of 34.1°C (Jefferson Chemicals, 1960) was quoted using a modified ASTM method (D-1078). Other values quoted without supporting data were 34°C at 101.325 kPa (BASF AG Material Safety Data Sheet, 1995), 34.3°C and 34°C (BASF AG Technische Information, 1993 and Dow Material Safety Data Sheet, 1987, respectively) and 34.3°C and 34°C at 101.3 kPa (BASF, 1981a and 1967, respectively). A value of 34.196°C at 101.325 kPa has been calculated from vapour pressure data, using the Antoine equation (ESDU, 1988). A measured boiling point of 33.9°C at 101.325 kPa (the American Chemical Society Monograph Series: Glycols, 1952) has also been quoted.

Applicant's summary and conclusion

Conclusions:

A boiling point value of 34.1°C is reported at 1013 hPa in a risk assessment summary report with a collection of reliable data which has been subject to peer-review and in which the original data sources are traceable. The result is considered to be reliable.