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Physical & Chemical properties

Auto flammability

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Link to relevant study record(s)

Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 2018-04-18 to 2018-04-19
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))
Deviations:
no
Qualifier:
according to guideline
Guideline:
DIN EN 14522, Method S (Determination of the auto ignition temperature of gases and vapours)
Deviations:
no
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Key result
Auto-ignition temperature:
375 °C
Atm. press.:
>= 1 016 - <= 1 017.3 hPa
Remarks on result:
other: acc. to EU method A.15 and DIN 51794
Auto-ignition temperature:
380 °C
Atm. press.:
>= 1 016 - <= 1 017.3 hPa
Remarks on result:
other: acc. to DIN 14522

Preliminary Test

An approximate value of the ignition temperature of the test item was first determined by a preliminary test (see table 1). An ignition is denoted as “+” and no ignition is denoted as “-“. 5 drops were put into the Erlenmeyer flask at each temperature.

Table 1: Results of the preliminary test

 

Preliminary test

Temperature / °C

354

401

447

439

431

421

411

404

Ignition / +/-

-

-

+

+

+

+

+

-

 

Atmospheric pressure: 1019.0 hPa

In the preliminary test, the lowest temperature at which an ignition occurred was 411 °C.

Main Test

The lowest temperatures at which an ignition occurred in the main test are given in Table 2.

Table 2: Lowest temperatures at which an ignition occurred

Main test series

Lowest temperatures of an ignition

Highest temperatures without an ignition

Atmospheric Pressure

1

385 °C

381 °C

1016.4 - 1017.6 hPa

2

384 °C

381 °C

1016.4 hPa

3

380 °C

377 °C

1016.0 – 1016.3 hPa

Based on results of the main test series, the lowest auto-ignition temperature was 375 °C (380 °C according to DIN EN 14522).

Conclusions:
The auto-ignition temperature of the test item was determined to be 375 °C at a pressure range of 1016.0 to 1016.3 hPa.
Executive summary:

A study was conducted according to EU method A.15 in order to determine the auto-ignition temperature of the test item using a ZPA-3 oven (Petrotest). The test was performed three times. By rounding down the lowest of the three auto-ignition temperatures to the nearest multiple of 5 °C the final auto-ignition temperature of the test item was determined to be 375 °C.

Description of key information

The auto-ignition temperature of the test item was determined to be 375 °C at a pressure range of 1016.0 to 1016.3 hPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
375 °C

Additional information

A study was conducted according to EU method A.15 in order to determine the auto-ignition temperature of the test item using a ZPA-3 oven (Petrotest). The test was performed three times. By rounding down the lowest of the three auto-ignition temperatures to the nearest multiple of 5 °C the final auto-ignition temperature of the test item was determined to be 375 °C.