Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
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:
- 19 January - 4 February 2022
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- The study was conducted according to an internationally recognised method, and under GLP. No deviation affected the quality of the study. The substance is adequately identified. Therefore full validation applies.
- Qualifier:
- according to guideline
- Guideline:
- DIN EN 14522, Method S (Determination of the auto ignition temperature of gases and vapours)
- Version / remarks:
- 2005-12
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
- Version / remarks:
- 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- GIPC GLP compliance (inspected on 18 -20 August 2020, signed on 17 Mars 2021)
- Key result
- Auto-ignition temperature:
- 231 °C
- Atm. press.:
- >= 981 - <= 990 hPa
- Remarks on result:
- other: As described in DIN EN 14522:2005, the final auto-ignition temperature was obtained in reducing the retained value by the absolute deviation calculated using the reproducibility value (1.5% relative).
- Conclusions:
- The auto-ignition temperature of the substance was determined to be 231°C.
This parameter 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 EU A15 guideline and DIN 14522 standard, method S.
Three test series were performed, where different volumes of test substance were injected into a heated flask, until the lowest temperature at which ignition occurs was determined. The relevant parameters were recorded for the final result.
The lowest of the three value was retained, corrected for uncertainty standard and rounded to the nearest °C as described in DIN 14522, resulting in an auto-ignition temperature of 231°C.
Reference
Apparatus Control:
The apparatus control was validated as the lowest auto-ignition temperature measured for each reference substance did not differ by more than 1.5% from the reference value.
Results
Two trials were conducted. In the first one, the preselected auto-ignition temperature was set to 150°C but no ignition occurred in the +/-100°C interval, and the test stopped automatically. In the second one, the preselected auto-ignition temperature was set to 350°C. The auto-ignition of the substance was tested in varying amount of substance (between 2 and 11 droplets) and temperature (between 232.0°C and 267.0°C).
Finally, three determinations were performed and then, three lowest auto-ignition temperatures were recorded as 237°C, 235°C and 237°C using 11 droplets each.
As these temperatures did not differ by more than 2% from the mean, these results were considered as valid and the lowest value (235°C) was retained. As described in DIN EN 14522:2005, the final auto-ignition temperature was obtained in reducing the retained value by the absolute deviation calculated using the reproducibility value (1.5% relative).
This value was rounded to the nearest 1 °C and a final auto-ignition temperature of 231°C was obtained.
The atmospheric pressure was 990 hPa at the beginning of the test and 981 hPa at the end of the test.
Description of key information
Experimental AIT = 231°C.
No particular hazard is anticipated in normal conditions of storage.
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 231 °C
Additional information
A fully reliable experimental study, conducted according to a recognized DIN/EU method and under GLP, is available. It is considered as a key study, and 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.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
