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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:
11-17 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:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to
Guideline:
other: DIN 51794 (2003): Determination of ignition temperature
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. certificate)
Remarks:
inspected on January 22 and 23, 2013 / signed on March 22, 2013
Specific details on test material used for the study:
Storage condition of test material: 11-25 °C, dry, keep container closed
Key result
Auto-ignition temperature:
235 °C
Atm. press.:
999.4 - 1 014.2 hPa

Preliminary Test

 

Table 4.12/1: Results of the preliminary test

 

Temperature (°C)

244

266

291

291

Ignition (+/-)

-

-

-

+

In the preliminary test, an ignition was observed at 291°C(Atmospheric pressure: 1014.2 hPa)

 

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

242 °C

241 °C

1014.2 hPa

2

238 °C

237 °C

1014.2 hPa

3

236 °C

234 °C

999.4 hPa

*only the measurements after the lowest temperature of ignition are considered as relevant for evaluation.

Based on results of the main test series, the lowest auto-ignition temperature was 236 °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 235 °C.

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 substance was tested for its autoflammable properties, according to Standard DIN 51794 (listed in EU A.15 guideline). Test material was injected into a heated flask, until the lowest temperature at which ignition occurs was determined.

The auto-ignition temperature of the test substance has been determined to be 235 °C at 999.4-1014.2 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:
235 °C

Additional information

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