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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:
10 - 16 November 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. No deviation was reported. Test substance is adequately specified with 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:
other: DIN 51794 (2003): Determination of ignition temperature
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected on January 22 and 23, 2013 / signed on March 22, 2013
Auto-ignition temperature:
245 °C
Atm. press.:
1 004.2 - 1 012.3 hPa

Preliminary Test

 

Table 4.12/1: Results of the preliminary test

 

Temperature (°C)

239

259

250

Ignition (+/-)

-

+

-

Atmospheric pressure: 1012.8 hPa

In the preliminary test, an ignition was observed at 259 °C

 

Main test

Table 4.12/2: Lowest temperatures at which an ignition occurred

 

Main test series

Lowest temperatures of an ignition

Highest temperatures without an ignition

Atmospheric pressure

1

254 °C

253 °C

1012.3 hPa

2

257 °C

255 °C

1012.3 hPa

3

248 °C*

247 °C*

1004.2-1011.4 hPa

*pending on the number of drops.

Based on results of the main test series, the lowest auto-ignition temperature was 248 °C. Results are within the required range of 10 °C, therefore the validity criterion is fulfilled.

The auto-ignition temperature rounded down to the nearest multiple of 5 °C was determined as 245 °C.

Conclusions:
The auto-ignition temperature of the test substance has been determined to be 245 °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:

The substance was tested for its autoflammable properties, according to EU method A.15 and Standard DIN 51794. Test substance was injected into a heated flask, until the lowest temperature at which ignition occurs was determined. The lowest value of the three determinations was retained.

The auto-ignition temperature of the test substance has been determined to be 245 °C at 1004.2-1012.3 hPa.

Description of key information

No particular hazard is anticipated in normal conditions of storage. 

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
245 °C

Additional information

A fully reliable experimental study, conducted according to a recognized DIN/IEC/EU method, and under GLP, is available. Therefore, it is considered as a key study, and 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.

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