Registration Dossier

Administrative data

Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
weight of evidence
Study period:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: a conservative approach was adopted to read across autoflammability from 1-bromopropane, the result is considered reliable.

Data source

Reference Type:
review article or handbook
GESTIS database of hazardous substances
German occupational health insurance institute BGIA
Bibliographic source:
Institute of the German Occupational accident insurance (IFA der Deutschen Gesetzlichen Unfallversicherung)

Materials and methods

Principles of method if other than guideline:
The result was obtained by read across froma structurally similar substance
GLP compliance:
not specified

Test material


Results and discussion

Auto-ignition temperature (liquids / gases)
Auto-ignition temperature:
> 490 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: value obtained from read across with 1-bromopropane
Relative self-ignition temperature (solids)
Relative self-ignition temperature:
> 490 °C
Remarks on result:
other: value obtained from read across with 1-bromopropane
at atm. press. of 1013.0 hPa

Any other information on results incl. tables

Read across of flammability properties of halogen propanes
substance name CAS No. boiling point/°C Flash point / °C Autoignition temp /°C lower explosion limit/g/m³
1-chloropropane 540-54-5 47 -18 520 70
2-chloropropane 75-29-6 35 -32 590 90
1-bromopropane 106-94-5 71 -10 490 170
2-bromopropane 75-26-3 59 -20   165

From the table it can be seen that boiling point and flash point of bromopropanes behave like the corresponding chloropropanes. A similar relationship can be expected from the autoignition temperatures. Due to the uncertainty of the autoignition process an exact figure cannot be given, however, a value of more than 490°C can be approximated as best guess for this endpoint.

Applicant's summary and conclusion

An autoignition temperature for 2-bromopropane of >490°C has been determined from read across with 1-bromopropane, for which reliable experimental results are reported.
The endpoint is not critical for the classification of explosion proof installations. According to ATEX explosion hazard class IIA can be assumed for the substance.