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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2019-01-02 to 2019-01-23
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
GLP compliance:
no
Key result
Auto-ignition temperature:
325 °C
Atm. press.:
1 021.6 hPa

Preliminary test

The following Table 1 shows the results of the preliminary test. Temperatures where auto-ignition was detected are marked with +; temperatures where no auto-ignition was detected are marked with - in the Table 1 below. The amount of test item tested at each measurement is indicated as numbers of portions (i.e. drops). The results are summarized in Table 1.

Table 1: Auto-ignition temperature (preliminary test)

T / °C

Portions

+ / -

Time lag / s

2041)

5

-

-

2541)

5

-

-

3041)

5

-

-

3541)

5

-

-

4042)

5

+

0

3742)

5

+

0

3642)

5

+

0

1)Barometric pressure: 1017.8 hPa

2)Barometric pressure: 1022.8 hPa

The lowest auto-ignition temperature of the test item was determined to be 364 °C in the preliminary test.

Main test

The results of the main test are summarized in Table 2.

Table 2: Auto-ignition temperature (summary main test)

Test series

Auto-ignition temp. / °C

Barometric pressure / hPa

Time lag / s

1st main test (5 K)

329

1021.6

4

1st main test (2 K)

342

1009.9

110

2nd main test (2 K)

333

1007.1

30

3rd main test (2 K)

333

1016.6

30

The lowest auto-ignition temperature of the test item was determined to be 329 °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, giving a value of 325 °C.

Conclusions:
The auto-ignition temperature of the test item was 325 °C at 1021.6 hPa.
Executive summary:

The auto-ignition temperature of the test item determined according to EU Method A.15. was 325 °C at 1021.6 hPa.

Description of key information

The auto-ignition temperature of the test item determined according to EU Method A.15. was 325 °C at 1021.6 hPa.

Key value for chemical safety assessment

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

Additional information