Registration Dossier
Registration Dossier
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EC number: 401-950-2 | CAS number: 31506-43-1 3-(DIMETHYLAMINO)PROPYL UREA; HST 2844
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 21 Februar 2022 - 8 March 2022
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source (i.e. manufacturer or supplier) and lot/batch number of test material: Manufacturer, UA21412002
- Purity, including information on contaminants, isomers, etc.: Content: 75% 3-(N,N-Dimethyl)propyl-urea and 25% Polyethylenglycol
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Store container tightly closed at a well-ventilated place. Store in the original container. Do not store with acids. - Key result
- Melting / freezing pt.:
- -47 °C
- Atm. press.:
- 1 011 hPa
- Conclusions:
- The test item PU-2021-971 has a melting range starting at -47.7 °C at atmospheric pressure (1011 hPa) as determined by Differential Scanning Calorimetry according to Regulation (EC) No 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
Reference
During the heating phase a distinct endothermic effect was observed in the temperature range of -50 to -40 °C, which can be assigned to the melting of the test item. As the test item is a mixture, it has a melting range starting at -47.7 °C.
Table 1: Results of the DSC-measurements
Measurement No. | Sample weight / | Onset of Effect / | Range of effect / | Weight loss / | Atmospheric pressure / |
PN23121 | 8.81 | -47.71 | -50 – -40 (endo) | 8.81 | 1011 |
PN23122
| 8.53 | -49.28 | -50 – -40 (endo) | 8.53 | 1011 |
Description of key information
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -47 °C
Additional information
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