Registration Dossier
Registration Dossier
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EC number: 257-048-2 | CAS number: 51200-87-4
Auto flammability
Administrative data
- Endpoint:
- auto-ignition temperature (liquids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 29 September - 15 October 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
- Report date:
- 2020
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- DIN EN 14522, Method P (Determination of the auto ignition temperature of gases and vapours)
- Version / remarks:
- 2005
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
- Version / remarks:
- 2003
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
- Version / remarks:
- Regulation (EC) no. 440/2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 4,4-dimethyloxazolidine
- EC Number:
- 257-048-2
- EC Name:
- 4,4-dimethyloxazolidine
- Cas Number:
- 51200-87-4
- Molecular formula:
- C5H11NO
- IUPAC Name:
- 4,4-dimethyl-1,3-oxazolidine
- Reference substance name:
- 2,3-dimethyl-1,3-oxazinane
- Cas Number:
- 31951-99-2
- Molecular formula:
- C6H13NO
- IUPAC Name:
- 2,3-dimethyl-1,3-oxazinane
- Reference substance name:
- 3,5,5-trimethylmorpholin-2-one
- Cas Number:
- 57765-62-5
- Molecular formula:
- C7H13NO2
- IUPAC Name:
- 3,5,5-trimethylmorpholin-2-one
- Test material form:
- liquid
- Details on test material:
- Lot no. MA20190405
Test item storage 2–8 °C, protected from light
Constituent 1
impurity 1
impurity 2
- Specific details on test material used for the study:
- Batch No.: MA20190405
Storage: Refrigerator (approx. 2-8°C)
Results and discussion
Auto-ignition temperature (liquids / gases)
- Key result
- Auto-ignition temperature:
- 325 °C
- Atm. press.:
- >= 1 001 - <= 1 004 hPa
Any other information on results incl. tables
Preliminary Test (ZT2):
The table below gives the result of the preliminary test. An ignition is denoted as “+” and no ignition is denoted as “-”. 5 drops were put into the Erlenmeyer flask at each temperature.
| Temperature / °C | Ignition / +/- |
| 222 | - |
| 246 | - |
| 268 | - |
| 292 | - |
| 315 | - |
| 341 | - |
| 363 | - |
| 387 | - |
| 386 | + |
| Atmospheric pressure: 1004.3 hPa | |
In the preliminary test, the lowest temperature at which an ignition occurred was 386 °C.
Main Test:
The lowest temperatures at which an ignition occurred in the main test are given in the table below:
Main test series | Lowest temperatures of an ignition [°C] | Highest temperatures without an ignition [°C] | Atmospheric Pressure [hPa] |
1 (ZT2) | 327 | 325 | 1004 |
2 (ZT2) | 327 | 325 | 1004 |
3 (ZT2) | 326 | 325 | 1004 |
4 (ZT3) | 327 | 326 | 1001.0 – 1003.4 |
Based on the results of the main test series, the lowest auto-ignition temperature was 326 °C.
Regulation (EC) No. 440/2008 and DIN 51794: The auto-ignition temperature rounded down to the nearest multiple of 5 °C was determined to be 325 °C.
For information:
DIN EN 14522: The auto-ignition temperature reduced by 1.5 % and rounded to the nearest integer temperature was determined to be 321 °C.
Applicant's summary and conclusion
- Conclusions:
- The test item 4,4-dimethyloxazolidine (CAS no. 51200-87-4) has an auto-ignition temperature of 325 °C according to Regulation (EC) No. 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Testing of mineral oil hydrocarbons – Determination of ignition temperature.
It is noted here that according to ECHA guidance – Guidance on information requirements and chemical safety assessment; chapter R.7A: Endpoint specific guidance, July 2017 – the auto-ignition temperature for liquids is not used directly for classification and labeling according to Regulation (EC) No. 1272/2008. However, it can be used in the chemical safety assessment in considering risks associated with processing the substance.
According to DIN EN 13463-1 the test item has to be assigned to temperature class T2. - Executive summary:
The test item 4,4-dimethyloxazolidine (CAS no. 51200-87-4) has an auto-ignition temperature of 325 °C according to Regulation (EC) No. 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Testing of mineral oil hydrocarbons – Determination of ignition temperature.
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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