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Auto flammability

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Reference
Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
7 July - 16 July 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Fully documented study run under GLP and according to international guidelines.
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
GLP compliance:
yes (incl. certificate)
Auto-ignition temperature:
> 436 - <= 456 °C
Atm. press.:
100 159 Pa
Remarks on result:
other: Pre-test
Auto-ignition temperature:
>= 428 - <= 429 °C
Atm. press.:
99 425 Pa
Remarks on result:
other: Main study: First experiment
Auto-ignition temperature:
>= 434 - <= 435 °C
Atm. press.:
99 614 Pa
Remarks on result:
other: Main study: Second experiment
Auto-ignition temperature:
>= 448 - <= 450 °C
Atm. press.:
99 611 Pa
Remarks on result:
other: Main study: Third experiment

The lowest value of the auto ignition temperature is 428 °C. This value was determined using seven drops test item. The test item showed auto ignition after four seconds.

The auto ignition temperature (result of determination) is the lowest value from the lowest values of the three experiments, rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 425 °C.

The three lowest values of the main study lay within a range of 20 K (as required for auto ignition temperatures above 300 °C

As an example, the temperature/time-curve is shown in the figure below for the second experiment.

Conclusions:
The auto ignition temperature (result of determination) is the lowest value from the lowest values of the three experiments (428 °C), rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 425 °C.
The three lowest values of the main study lay within a range of 20 K (as required for auto ignition temperatures above 300 °C).
Executive summary:

The auto ignition temperature of reaction mass of 2,2’-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) was determined according to EU A.15.

An auto ignition temperature of 425 °C was determined. This value is the lowest value in three independent determinations.

Description of key information

The auto ignition temperature of “2-propanol and 2-butanol production, distn. residues” was determined according to EU A.15 under GLP.

An auto ignition temperature of 425 °C was determined. This value is the lowest value in three independent determinations.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
425 °C

Additional information

The auto ignition temperature of “2-propanol and 2-butanol production, distn. residues” was determined according to EU A.15 under GLP. The auto ignition temperature (result of determination) is the lowest value from the lowest values of the three experiments (428 °C), rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 425 °C.

The three lowest values of the main study lay within a range of 20 K (as required for auto ignition temperatures above 300 °C).