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Physical & Chemical properties

Auto flammability

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Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012-03-01 to 2012-03-26
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted according to an internationally recognised guideline. Purity of the test substance is specified (with certificate of analysis). Minor restriction is not considered to be significant. Therefore full validation applies.
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to
Guideline:
BS-4056 (Method of test for ignition temperature of gases and vapours)
Version / remarks:
1966
GLP compliance:
yes (incl. certificate)
Auto-ignition temperature:
256 °C
Atm. press.:
1 027 mBar

 Test temperature (°C)  Test volume (μl)  Time (s)  Observation
 400  70  1  Yellow flame
 300  70  8   Yellow flame
 266  70  22   Yellow flame
 250  70  >300  White smoke, no ignition
 250  1000  >300  White smoke, no ignition
 258  70 38    Yellow flame
 254  70  >300   White smoke, no ignition
 254  1000  >300   White smoke, no ignition
 256  70  >300   White smoke, no ignition
 256  1000  60  Yellow flame 
 254  100   >300   White smoke, no ignition
 254  200   >300   White smoke, no ignition
 254  500   >300   White smoke, no ignition
 254  1000   >300   White smoke, no ignition
 254  1000   >300   White smoke, no ignition
 254  1000   >300   White smoke, no ignition
 254  1000   >300   White smoke, no ignition
 254  1000   >300   White smoke, no ignition
Conclusions:
This parameter/method is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard. No particular hazard is anticipated in normal conditions of storage.
Executive summary:

The auto-ignition temperature of the test substance was measured under GLP according to BS 4056 standard (listed in EU A15 guideline).

The test material was injected into a heated flask, until the lowest temperature at which ignition occurs was determined. The relevant parameters (volume, time lag, atmospheric pressure) were recorded for the final result.

The test material has been determined to have an auto-ignition temperature of 256 °C.

Endpoint:
auto-ignition temperature (liquids)
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
Please refer to the RAAF document in IU section 13 for detailed justification.
Reason / purpose:
read-across source
Key result
Auto-ignition temperature:
ca. 256 °C
Atm. press.:
1 027 mBar
Conclusions:
(from analogue) The auto-ignition temperature of the target substance is expected to be ca 256°C.
This parameter/method is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard. No particular hazard is anticipated in normal conditions of storage.
Executive summary:

The auto-ignition temperature of the analogue test substance was measured under GLP according to BS 4056 standard (listed in EU A15 guideline).

The test material was injected into a heated flask, until the lowest temperature at which ignition occurs was determined. The relevant parameters (volume, time lag, atmospheric pressure) were recorded for the final result.

The test material has been determined to have an auto-ignition temperature of 256 °C.

Read-across is justified as the target substance is structurally similar (two carbon more in the branched chain length), and has similar boiling and flash points.

Description of key information

(from analogue) AIT expected ca 256°C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
256 °C

Additional information

No data is available for the substance itself. However, a fully reliable experimental study, conducted according to a recognised EU/BS method, and under GLP, is available on an analogue. Therefore the result was extrapolated to the parent target substance.

This parameter is not relevant for classification, however the information is useful for Risk Management Measures regarding storage and process safety, or in case of a fire. No particular hazard is anticipated in normal conditions of storage.