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

Flammability

Administrative data

Endpoint:

flammability

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 data are taken from a reliable study summary.

Data source

Reference

Reference Type:

review article or handbook

Title:

Unnamed

Year:

2002

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

other: DIN 51759

GLP compliance:

not specified

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

Flammable gases (Lower and upper explosion limit)

Flammable gases (Lower and upper explosion limit) 1

Parameter:

lower explosion limit

Value:

1.8 % (not further specified)

Flammable gases (Lower and upper explosion limit) 2

Parameter:

upper explosion limit

Value:

36 % (not further specified)

Flammable solids

Test procedure:

burning time (test type not further specified)

Remarks:

or specified in description of method (migrated information)

Remarks on result:

other: Not applicable, since the substance is liquid.

Pyrophoric solids

Test procedure:

ignition time on contact with air

Remarks:

Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).

Remarks on result:

no ignition on contact with air (not further specified)

Remarks:

corresponding to 'no' in migrated source record. | Remarks: | Additional remarks: There is no indication on the basis of structure and experience in handling and the use that the substance ignites in contact with air.

Pyrophoric liquids

Test procedure:

ignition time on contact with air

Remarks:

Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).

Remarks on result:

no ignition on contact with air (not further specified)

Remarks:

corresponding to 'no' in migrated source record. | Remarks: | Additional remarks: There is no indication on the basis of structure and experience in handling and the use that the substance ignites in contact with air.

Any other information on results incl. tables

Of the cited studies, only the ARCO Chemical Company (1975, see citations in report) provided actual measured data and details of the method of measurement. Therefore these values, 1.85 - 36.25, are the ones used in this assessment.

Applicant's summary and conclusion

Conclusions:

The flamability of liquids is assessed by reference to the flash point (Section 7.9). There is no indication on the basis of structure and experience in handling and the use that the substance is flammable in contact with air or water. The substance is classified R12 (Extremely Flammable) according to Directive 67/548/EEC and Flammable Liquid Category 1 (H224: Extremely flammable liquid and vapour) according to Regulation 1272/2008. This is on the basis of a flash point of -40°C and a boiling point of 34.1°C.