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EC number: 429-900-5 | CAS number: 82356-51-2
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:
- 1995-06-30 to 1995-07-26
- 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 affected the quality of the study. Purity is specified in the report, and isomers composition is available from the notifier. Therefore full validation applies.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
- Qualifier:
- according to guideline
- Guideline:
- IEC 60079-4 (Electrical apparatus for explosive gas atmospheres. Part 4: Method of test for ignition temperature)
- Version / remarks:
- Anon (1987), Electrical apparatus for explosive gas atmospheres. Part 4: Method of test for ignition temperature. IEC Publications 79-4, p1-19.
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Inspected on 31 January 1994. Signed on 16 March 1994
- Key result
- Auto-ignition temperature:
- 248 °C
- Atm. press.:
- 100.86 - 102.23 kPa
- Conclusions:
- This parameter/method is not relevant for classification; however the information is useful regarding process safety and potential additional fire hazard.
No particular hazard is anticipated in normal conditions of storage. - Executive summary:
The auto-ignition temperature of the test substance was measured under GLP according to IEC 79-4 method (listed in EU A15 guideline).
Different volumes were injected into a heated flask, until the lowest temperature at which ignition occurs was determined. Volume, time lag for ignition and atmospheric pressure were recorded.
The auto-ignition temperature of the test substance is 248°C.
Reference
The results detailed below were obtained during testing:
| Test temperature (°C) |
Test volume (µL) |
Ignition delay (s) |
Observations |
| 50 | 70 | > 300 | No ignition. |
| 100 | 70 | > 300 | No ignition. |
| 150 | 70 | > 300 | No ignition. |
| 200 | 70 | > 300 | No ignition. |
| 250 | 70 | > 300 | No ignition. |
| 300 | 70 | > 300 | No ignition. Grey vapour emitted. |
| 350 | 70 | > 300 | Yellow flame. Grey vapour emitted. |
| 340 (clean flask) | 70 | 6 | Yellow flame. Grey vapour emitted. |
| 320 (clean flask) | 70 | > 300 | No ignition. Grey vapour emitted. |
| 330 | 70 | 6 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 324 (clean flask) | 70 | 2 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 322 (clean flask) | 70 | 9 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 320 (clean flask) | 200 | 3 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 310 (clean flask) | 200 | 3 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 300 | 200 | 4 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 290 | 200 | 6 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 280 | 200 | 8 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 270 | 200 | 15 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 260 | 200 | 26 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 250 | 200 | > 300 | No ignition. Grey vapour emitted. |
| 254 | 200 | 79 | Yellow flame, loud 'pop'. Grey vapour emitted. |
| 252 (clean flask) | 200 | > 300 | No ignition. Grey vapour emitted. |
| 252 (clean flask) | 400 | > 300 | No ignition. Grey vapour emitted. |
| 252 (clean flask) | 600 | 96 | Yellow flame, small 'pop'. Grey vapour emitted. |
| 250 (clean flask) | 600 | > 300 | No ignition. Grey vapour emitted. |
| 250 (clean flask) | 800 | > 300 | No ignition. Grey vapour emitted. |
| 250 (clean flask) | 1000 | 152 | Yellow flame, small 'pop'. Grey vapour emitted. |
| 248 (clean flask) | 1000 | 121 | Yellow flame, small 'pop'. Grey vapour emitted. |
| 246 (clean flask) | 1000 | > 300 | No ignition. Grey vapour emitted. |
| 246 (clean flask) | 1200 | > 300 | No ignition. Grey vapour emitted. |
| 246 (clean flask) | 1400 | > 300 | No ignition. Grey vapour emitted. |
| 246 (clean flask) | 1600 | > 300 | No ignition. Grey vapour emitted. |
| 246 (clean flask) | 1800 | > 300 | No ignition. Grey vapour emitted. |
Room temperature: 19 -25°C
precision: +/-5°C
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:
- 248 °C
Additional information
A fully reliable experimental study, conducted according to a recognized EU/IEC method and under GLP, is available. Therefore, it is considered as a key study, and the result is retained as key data.
It should be noted that, due to the multi-isomers nature of the substance tested, this result may refer to the most flammable one.
This parameter is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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