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EC number: 944-953-9 | CAS number: 73326-59-7
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- auto-ignition temperature (liquids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 2017-05-12 to 2017-06-06
- 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 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- DIN EN 14522, Method P (Determination of the auto ignition temperature of gases and vapours)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- DIN EN 14522, Method S (Determination of the auto ignition temperature of gases and vapours)
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- This study was not performed under the Principles of Good Laboratory Practice (GLP).
- Key result
- Auto-ignition temperature:
- 295 °C
- Atm. press.:
- >= 994 - <= 1 022 hPa
- Conclusions:
- The test item has an auto-ignition temperature of 295 °C according to the Regulation EC No. 440/2008 Method A.15. and DIN 51794 (2003). According to DIN EN 13463-1 the test item has to be assigned to temperature class T3.
- Executive summary:
A study was conducted according to Regulation (EC) No 440/2008 Part A.15, DIN 14522 (2005) and DIN 51794 (2003) to determine the auto-ignition temperature of the test substance. In a preliminary test the approximate auto-ignition temperature was determined. For the main test three test series were conducted. The temperature determined in the preliminary test was used as starting point for the main test. The temperature was decreased by 1 - 3 K until no ignition was observed. According to criteria laid down in Regulation EC No. 440/2008 method A.15 and DIN 51794 the auto-ignition temperature is the lowest value rounded down to a whole multiple of 5 °C. Therefore, the auto-ignition temperature was determined to be 295 °C at 994 -1022 hPa.
Reference
Preliminary Test
An approximate value of the ignition temperature of the test item was first determined by a preliminary test. An “ignition” is indicated as “+” and “no ignition” as “-“. 5 drops were added into the Erlenmeyer flask at each temperature.
Table 1: Results of the preliminary test
Preliminary test |
|||||||
Temperature / °C |
206 |
253 |
300 |
352 |
341 |
332 |
321 |
Ignition +/- |
- |
- |
- |
+ |
+ |
+ |
- |
Atmospheric pressure: 994 hPa |
|||||||
In the preliminary test, an ignition was observed at 332 °C.
Main Test
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 |
300 °C |
299 °C |
994 – 1022 hPa |
2 |
300 °C |
298 °C |
1022 hPa |
3 |
301 °C |
299 °C |
1022 hPa |
Based on results of the main test series, the lowest auto-ignition temperature was 300 °C.
Regulation EC No. 440/2008 and DIN 51794:The auto-ignition temperature rounded down to the nearest multiple of 5 °C was determined as 295 °C.
Description of key information
The test item has an auto-ignition temperature of 295 °C according to the Regulation EC No. 440/2008 Method A.15. and DIN 51794 (2003). According to DIN EN 13463-1 the test item has to be assigned to temperature class T3.
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 295 °C
Additional information
A study was conducted according to Regulation (EC) No 440/2008 Part A.15, DIN 14522 (2005) and DIN 51794 (2003) to determine the auto-ignition temperature of the test substance. In a preliminary test the approximate auto-ignition temperature was determined. For the main test three test series were conducted. The temperature determined in the preliminary test was used as starting point for the main test. The temperature was decreased by 1 - 3 K until no ignition was observed. According to criteria laid down in Regulation EC No. 440/2008 method A.15 and DIN 51794 the auto-ignition temperature is the lowest value rounded down to a whole multiple of 5 °C. Therefore, the auto-ignition temperature was determined to be 295 °C at 994 -1022 hPa.
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