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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:
September 2016
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:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to
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:
no
Key result
Auto-ignition temperature:
ca. 260 °C
Atm. press.:
>= 99 828 - <= 100 105 Pa

Results

Table 4.12/1: Auto ignition temperature – results

Experiment

Value

Ignition delay

Drops used

First Test Series

262°C

170 s

5

Second Test Series

262°C

23 s

5

Third Test Series

262°C

25 s

9

 

The lowest value of the auto ignition temperature is 262 °C. This value was determined using 5 respectively 9 drops of test substance. The test substance showed auto ignition after 23 respectively 25 and 170 seconds.

The auto ignition temperature (result of determination) was 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 was stated as 260 °C.

Validity

Table 4.12/2: Acceptable ranges

 

Auto ignition temperature

Range

< 300 °C

difference between 3 values of the main study max. 5°C

> 300 °C

difference between 3 values of the main study max. 10°C

 

The three lowest values of the main determination laid within a range of 5 °C (as required for auto ignition temperatures below 300 °C), therefore the validity criteria of the standard was fulfilled.

Conclusions:
Under the test conditions, the auto-ignition temperature of the test item was stated as 260 °C between 99,828 and 100,105kPa.
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 262 °C in the main test. This value was determined using 5 respectively 9 drops of test substance. The test substance showed auto ignition after 23 respectively 25 and 170 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 three experiments, rounded down to a whole multiple of 5°C.

 

Therefore, the auto-ignition temperature of the test item is stated as 260 °C (at 99828 to 100105Pa ).

Description of key information

The test item has been determined to have an auto-ignition temperature of 260°C under the test conditions (between 99,828 and 100,105 kPa).

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:
260 °C

Additional information

One non-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 auto-ignition temperature of the test item was determined to be 260°C in the main test. Due to safety reasons and according to the guidelines the lowest measured temperature at which an ignition was observed was rounded to the next lower number divisible by 5.

The test substance has been determined to have an auto-ignition temperature of 260°C.