Registration Dossier
Registration Dossier
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EC number: 257-048-2 | CAS number: 51200-87-4
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 17-18 September 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:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- EC No. 440/2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- 1998
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
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
Melting / freezing point
- Key result
- Melting / freezing pt.:
- < -90 °C
- Atm. press.:
- ca. 1 023 hPa
- Remarks on result:
- other: no melting point down to a temperature of -90 °C
Any other information on results incl. tables
The results of the DSC-measurements are given in the table below:
Measurement No. |
Sample weight / mg |
Onset of Effect / °C |
Range of effect / °C |
Weight loss / mg |
Atmospheric pressure / hPa |
PN20209 |
9.31 |
131.10 |
40 – 170 (endo) |
9.31 |
1023.0 |
PN20210 |
9.70 |
129.82 |
40 – 160 (endo) |
9.70 |
1023.0 |
During the cooling phase down to -90 °C no thermal effects could be observed. In the subsequent heating phase, also no thermal effects could be observed.
Applicant's summary and conclusion
- Conclusions:
- The test item 4,4-dimethyloxazolidine (CAS no. 51200-87-4) has no melting point down to a temperature of -90 °C at atmospheric pressure (1023 hPa) as determined by Differential Scanning Calorimetry according to Regulation (EC) No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
- Executive summary:
The test item 4,4-dimethyloxazolidine (CAS no. 51200-87-4) has no melting point down to a temperature of -90 °C at atmospheric pressure (1023 hPa) as determined by Differential Scanning Calorimetry according to Regulation (EC) No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
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