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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
April 14 to 16, 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted according to an internationally recognised method, and under GLP. The substance is considered to be adequately characterised with its purity. 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)
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:
320 °C
Atm. press.:
>= 99 584 - <= 101 079 Pa
Remarks on result:
other:

RESULTS

The requirements for repeatability of the DIN standard are stated as follows: Three lowest values of the main test have to lie within a range of 10 K (if auto ignition temperature is below 300 °C) respectively 20 K (if auto ignition temperature is above 300 °C). The following lowest values were recorded:

 

Table 4.12/1: Lowest Values - Main Test

 

Experiment

Value

Ignition delay

Drops used

First test series

342 °C

14 s

5

Second test series

327 °C

19 s

5

Third test series

324 °C

20 s

5

 

  

The lowest value of the auto ignition temperature is 324 °C. This value was determined using 5 drops test item. The test item showed auto ignition after 20 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 320 °C.

 

Validity

In the DIN, the following limits are applied to the range of lowest values which may be used for evaluation:

 

Table 4.12/2: Acceptable ranges

 

Auto ignition temperature

Range

< 300 °C

difference between three values of the main test max. 10 K

> 300 °C

difference between three values of the main test max. 20 K

 

The three lowest values of the main test lay within a range of 20 K (as required for auto ignition temperatures above 300 °C). The largest difference between measured ignition temperatures was 18 K.

 

DISCUSSION

The study was conducted according to procedure and demands of EU-Method A.15 and DIN 51794. The acceptable range which is demanded in the DIN standard was fulfilled. All measured values show good correlation. No observations were made which might cause doubts concerning the validity of the study outcome.

Conclusions:
Auto-ignition temperature of the test item is stated as 320 °C. 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:

One GLP study was performed in order to determine the auto-ignition temperature of the test item in compilance 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 324°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 320°C.

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.

 

Description of key information

The test item has been determined to have an auto-ignition temperature of 320°C. No particular hazard is anticipated in normal conditions of storage.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
320 °C

Additional information

One GLP study was performed in order to determine the auto-ignition temperature of Cade Oil in compilance 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 324°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 320°C.

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.