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Physical & Chemical properties

Auto flammability

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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:
24-30 January 2018
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. Test substance is adequately characterised. Therefore full validation applies.
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
2008
Deviations:
no
Principles of method if other than guideline:
Not relevant
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected on 13 and 14 October 2014 / signed on 08 April 2015
Key result
Auto-ignition temperature:
255 °C
Atm. press.:
>= 997.44 - <= 1 012.18 hPa

Pre-determination:

The ignition attempts of the pre-determination program are presented in the following table:

Selected T*

T Vessel

Drops used

Ignition?

Observations

°C

°C

#

yes/no

 

300

200.1

5

no

smoke

300

220.2

5

no

smoke

300

241.6

5

no

smoke

300

262.1

5

no

smoke

300

285.3

5

yes

Flame and plop, ignition after 37 s

Main tests:

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 5 K (if auto ignition temperature is below 300 °C) .

The following lowest values were recorded:

Experiment

Value

Ignition delay

Drops used

First test series

258 °C

113 s

13

Second test series

256 °C

93 s

12

Third test series

258 °C

76 s

12

The lowest value of the auto ignition temperatureis 256 °C. This value was determined using 12 drops test item. The test item showed auto ignition after 93 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 255 °C.

Conclusions:
Auto-ignition temperature of test item was determined to be 255°C (lowest value of three independent determinations rounded down to a whole multiple of 5 °C).
Executive summary:

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

The auto ignition temperature was determined in three independent determinations. A lowest value of the main study of 256°C was found ( for 12 drops of test item, ignition delay 93 seconds).

Therefore, the auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of test item is stated as 255°C.

Description of key information

The auto-ignition temperature of test item was determined to be 255°C (lowest value of 3 determinations rounded down to a whole multiple of 5 °C).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
255 °C

Additional information

A fully reliable experimental study, conducted according to a recognized DIN/EU method and under GLP is available.

It is considered as a key study.

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

No particular hazard is anticipated in normal conditions of storage.