Registration Dossier
Registration Dossier
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EC number: 457-810-6 | 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:
- 22 - 30 September 2021
- 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, with no deviation, and under GLP. The substance is adequately characterised. 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 March 2021)
- Key result
- Auto-ignition temperature:
- ca. 257 °C
- Atm. press.:
- >= 983 - <= 992 hPa
- 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 EU A15 guideline and DIN 14522 standard.
Four 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 four 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 257°C (530.15K).
Reference
Apparatus Control:
The apparatus control was performed less than 6 months before the test (control on 19 and 22 April 2021 and measurements dated from 22 September to 30 September 2021). 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 258.0°C and 273.0°C). One auto-ignition temperature was recorded during the first determination (recorded as LASTIP on raw data): 261°C using 8 droplets.
During the second determination, as the measurement stopped (Nodrps appears on raw data) measurement was launched again from the step it previously stopped (H-A1). Therefore, the number of drops was different (3, 6 and 9) for the rest of the measurement and three other auto-ignition temperatures (determination 2, 3 and 4) were recorded (recorded as LASTIP on raw data): 263°C, 263°C and 263°C using 6 droplets each.
As these four auto-ignition temperature obtained with the determination program did not differ by more than 2% from the mean, the results were validated and the lowest value (261°C) was manually reduced by the absolute deviation calculated using the reproducibility value (1.5% relative) as described in DIN EN 14522:2005.
This value was rounded to the nearest 1 °C and a final auto-ignition temperature (manually calculated as the measurement stopped during the study) of 257°C was obtained.
Description of key information
Experimental AIT = 257°C (530.15K) (EU A15/DIN 14522; GLP).
No particular hazard is anticipated in normal conditions of storage.
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 257 °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.
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