(S)-1,2-epoxypropane

Flash point

Administrative data

Endpoint:

flash 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:

Pensky Martens apparatus according to 67/548 Annex V.

GLP compliance:

no

Type of method:

closed cup

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 S(-) value is identical to the racemate endpoint.

Results and discussion

Flash point

Flash point:

-40 °C

Remarks on result:

other: Average taken from studies which used an approved testing method.

Any other information on results incl. tables

The flash point (closed cup) has been reported as -44°C (BASF AG Material Safety Data Sheet, 1995) and -37°C (Elm, R, cited in Ullmans Encyklopädie der technischen Chemie, 1980). Both tests were reportedly conducted using an accepted Annex V test method (Penskey-Martens apparatus) and although actual data were not provided, these values are supported by estimates based on vapour pressure and lower explosive limit data which gave values of between -43.4°C and -38.4°C. Values of -35°C and -37°C are widely quoted in secondary sources.

Applicant's summary and conclusion

Conclusions:

A flash point of the substance of -40°C was selected from the available literature data. Together with a boiling point below 35°C the substance must therefore be classified as “Extremely Flammable R12 / H224".