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Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 10 to 13th July 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
The study was conducted according to an internationally recognised method. The substance is considered to be adequately characterised. Therefore full validation applies.
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
2003
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected on 13 and 14 October 2014 / signed on 08 April 2015
Key result
Auto-ignition temperature:
ca. 275 °C
Atm. press.:
>= 99 188 - <= 100 439 Pa

Results

Table 4.12/1: Auto ignition temperature – results

Experiment

Value

Ignition delay

Drops used

First test series

276 °C

70 s

5

Second test series

280 °C

57 s

5

Third test series

280 °C

70 s

5

The lowest value of the auto ignition temperature is 276 °C. This value was determined using 5 drops test item. The test item showed auto ignition after 70 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 275 °C.

Validity

The requirements for precision of the DIN standard in case of one observer and one test system (no interlaboratory testing, no second observer) are stated as follows: Sufficient accordance is reached if the largest difference between measured temperatures was:

- at the most 5 °C for ignition temperatures up to 300 °C

- at the most 10 °C for ignition temperatures above 300 °C.

As these demands are not fulfilled, the higher temperature is discarded.

As no difference between three evaluated measured ignition temperatures, accordance with the demands of the DIN standard is given.

Conclusions:
Under the test conditions, the auto-ignition temperature of the test item was stated as 275°C between 99.188-100.439kPa.
This parameter/method is not relevant for classification, however the information is useful regarding potential additional fire hazard. No particular hazard is anticipated in normal conditions of storage.
Executive summary:

The study was conducted according to procedure and demands of EU-Method A.15 and DIN 51794.

The auto ignition temperature was determined in three independent determinations. The lowest value of the auto ignition temperature is 275 °C. This value was determined using 5 drops of test substance. The test substance showed auto ignition after 70 seconds.

Due to safety reasons and according to the guidelines the auto ignition temperature (result of determination) is the lowest value from the lowest values of the experiments, rounded down to a whole multiple of 5 °C.

Therefore, the auto-ignition temperature of the test item is stated as 275 °C (99188 -100439 Pa).

Description of key information

The test item has been determined to have an auto-ignition temperature of 275°C under the test conditions (99188 -100439 Pa).

This parameter/method is not relevant for classification, however the information is useful regarding potential additional fire hazard.

No particular hazard is anticipated in normal conditions of storage.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
275 °C

Additional information

A GLP study was performed in order to determine the auto-ignition temperature of the test substance in compliance with the EU-Method A.15 and stardard DIN 51794 listed in EU A15. 

The auto ignition temperature was determined in three independent determinations. The lowest value of the auto ignition temperature is 275 °C. This value was determined using 5 drops of test substance. The test substance showed auto ignition after 70 seconds.

Due to safety reasons and according to the guidelines the auto ignition temperature (result of determination) is the lowest value from the lowest values of the experiments, rounded down to a whole multiple of 5 °C.

Therefore, the auto-ignition temperature of the test item is stated as 275 °C (99188 -100439 Pa).