Registration Dossier
Registration Dossier
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EC number: 201-051-3 | CAS number: 77-71-4
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Testing was conducted between 26 October 2009 and 19 November 2009.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- EXAMPLE:
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Date of inspection: 19-08-2008 Date of Signature: 04-09-2009
- Type of method:
- other: EXAMPLE: Differential scanning calorimetry (DSC)
Test material
- Reference substance name:
- DMH
- IUPAC Name:
- DMH
- Details on test material:
- Sponsor's identification: DMH
Description: white crystalline solid
Batch number: N5439431
Date received: 24 February 2006
Storage conditions: room temperature in the dark
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- 449 K
- Remarks on result:
- other: air (static)
Any other information on results incl. tables
Results
Thermograms and thermographic data for Determinations 1 and 2 are shown in Figure 4.1. and Figure 4.2. and in the following tables respectively.
Figure 4.1 Thermogram – Determination 1 (Please see attached Fig 4.1 & 4.2 Thermogram – Determination)
Table 4.2 Thermographic Data – Determination 1
Thermal Event |
Interpretation |
Temperature |
|
ºC |
K |
||
Endotherm |
Melting Temperature |
176.10 |
449 |
Figure4.2
Thermogram – Determination 2 (Please see attached Fig 4.1 & 4.2 Thermogram – Determination)
Table4.3 Thermographic Data – Determination 2
Thermal Event |
Interpretation |
Temperature |
|
ºC |
K |
||
Endotherm |
Melting Temperature |
176.14 |
449 |
Mean melting temperature: 449 ± 0.5 K
Applicant's summary and conclusion
- Conclusions:
- The melting/freezing temperature of the test material has been determined to be 449 ± 0.5 K.
- Executive summary:
Method
The determination was carried out by differential scanning calorimetry (DSC) using the procedure specified in ASTM E537-86, Method A1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008.
Conclusion
The melting/freezing temperature of the test material has been determined to be 449 ± 0.5 K.
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