Registration Dossier

Physical & Chemical properties

Auto flammability

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11-13 December 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, and under GLP. 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))
Version / remarks:
2008
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:
yes (incl. certificate)
Remarks:
inspected on 13 and 14 October 2014 / signed on 08 April 2015
Key result
Auto-ignition temperature:
255 °C
Atm. press.:
>= 96 455 - <= 99 663 Pa

The following lowest values were recorded:

 

Table 4.12/1: Lowest Values Main Study

 

Experiment

Value

Ignition delay

Drops used

First test series

260°C

46s

9

Second test series

259 °C

51 s

9

Third test series

260 °C

44 s

9

Atmospheric pressure is measured between 964.55 and 996.63 hPa.

 

The lowest value of the auto ignition temperature is 259 °C. This value was determined using 9 drops of test item. The test item showed auto ignition after 51 seconds.

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, giving a value of 255 °C (964.55 - 996.63 hPa)

 

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 3 values of the main study max. 5 K

> 300 °C

difference between 3 values of the main study max. 10 K

 

The largest difference between measured ignition temperatures was 1 K. Therefore, the three lowest values of the main study lay within a range of 5 K (as required for auto ignition temperatures below 300 °C) and all measured values of the evaluated test series show good correlation.

No observations were made which might cause doubts concerning the validity of the study outcome.

Conclusions:
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 under GLP according to standard DIN 51794:2003 (listed in EU A.15 guideline).

Under the test conditions, the lowest temperature that will result in the ignition of the test item after being injected into the apparatus was determined as 255 °C between 964.55 and 996.63 hPa. This value was determined using approximately 9 drops of test substance. The test substance showed auto ignition after 51 seconds.

Description of key information

The auto-ignition temperature of the test item is stated as 255 °C (between 964.55 and 996.63 hPa.)

No particular hazard is anticipated in normal conditions of storage

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
290 °C

Additional information

A GLP fully reliable experimental study, conducted according to a recognized EU/DIN method, is available. Therefore, it is considered as a key study. The result is retained as key data.

 

This parameter is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard.