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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Auto flammability

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Endpoint:
auto-ignition temperature (gases)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Up to 2008
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Non-GLP, non-guideline, Information from published handbook, acceptable with restrictions.
Principles of method if other than guideline:
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.
GLP compliance:
not specified
Specific details on test material used for the study:
N/A
Key result
Auto-ignition temperature:
287 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: Standard pressure assumed

N/A

Conclusions:
The auto-flammability temperature of butane is 287°C.
Executive summary:

The auto-flammability temperature is 287˚C. This information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Endpoint:
auto-ignition temperature (gases)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Up to 2008
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: GLP status not known, guideline not known, information from a published handbook, acceptable with restrictions
Principles of method if other than guideline:
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.
GLP compliance:
not specified
Specific details on test material used for the study:
N/A
Key result
Auto-ignition temperature:
472 °C
Atm. press.:
1 013 hPa
Remarks on result:
other:

N/A

Conclusions:
The self-ignition temperature for ethane is 472˚C.
Executive summary:

No information on the primary source of the data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint. Most up to date source at the time. The self-ignition temperature for ethane is 472˚C.

Endpoint:
auto-ignition temperature (gases)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Up to 2008
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Non-GLP, non-guideline, Information from published handbook, acceptable with restrictions.
Principles of method if other than guideline:
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.
GLP compliance:
not specified
Specific details on test material used for the study:
N/A
Key result
Auto-ignition temperature:
460 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: Standard pressure assumed

N/A

Conclusions:
The auto-flammability temperature of isobutane is 460°C.
Executive summary:

The auto-flammability temperature of isobutane is 460˚C. This information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Endpoint:
auto-ignition temperature (gases)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Up to 2008
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Non-GLP, non-guideline, Information from published handbook, acceptable with restrictions.
Principles of method if other than guideline:
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.
GLP compliance:
not specified
Remarks:
No data reported
Specific details on test material used for the study:
N/A

Key result
Auto-ignition temperature:
537 °C
Atm. press.:
1 013 hPa
Remarks on result:
other:

N/A

Conclusions:
The auto-flammability temperature of methane is 537˚C.
Executive summary:

The auto-flammability temperature of methane is 537˚C. This information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Endpoint:
auto-ignition temperature (gases)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Up to 2008
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Non-GLP, non-guideline, Information from published handbook, acceptable with restrictions.
Principles of method if other than guideline:
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.
GLP compliance:
not specified
Remarks:
No data reported
Specific details on test material used for the study:
N/A
Auto-ignition temperature:
450 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: Standard pressure assumed.

N/A

Conclusions:
The auto-flammability temperature of propane is 450°C.
Executive summary:

The auto-flammability temperature of propane is 450˚C. This information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Description of key information

The autoflammability temperature of the substances in the category ranges from 287 to 537°C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
441 °C

Additional information

Data are available for 95465-89-7 from a proprietary study conducted according to standard guidelines. Data from the CRC handbook (Lide 2008) were available for the substances methane, ethane, propane, butane and isobutane. Data from the Merck handbook (O’Neill 2006) were available for methane and ethane. The information is taken from reliable peer reviewed handbooks and so can be considered reliable and suitable for use for this endpoint.

The autoflammability temperature of methane is 537°C, ethane is 472°C, propane is 450°C, butane is 287°C and isobutane is 460°C. The mean of the autoflammability temperature values for the category is 441°C and this has been used to complete the 'key value for chemical safety assessment'.