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EC number: 230-525-2 | CAS number: 7173-51-5
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:
- 25 Aug, 2011 - 21 Dec, 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: Differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- ca. 94 - ca. 100 °C
- Atm. press.:
- ca. 1 013 hPa
- Conclusions:
- The melting point was determined with DSC at 1013 hPa and found to be in the range of 94 - 100°C.
- Executive summary:
The melting point of the test substance was studied according to the protocols of OECD 102 and EC A.1. The melting point was determined with DSC at 1013 hPa and found to be in the range of 94 - 100°C.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From August 01, 2000 to August 02, 2000
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: Differential scanning calorimetry (DSC)
- Key result
- Melting / freezing pt.:
- ca. 188 - ca. 205 °C
- Atm. press.:
- ca. 1 013 hPa
- Decomposition:
- yes
- Decomp. temp.:
- > 280 °C
- Remarks on result:
- other: The test substance has no boiling point due to thermal decomposition.
- Conclusions:
- Under the test conditions, the melting point of the test substance ranged from 188 - 205°C.
- Executive summary:
A study was conducted to determine the melting of the test substance 'didecyldimethylammonium chloride' (DDAC) according to the protocols of OECD 102 and EU method A.1. The melting point was determined using the DSC method at 1013 hPa. The recorded melting peaks were not sharp enough to calculate an exact melting temperature out of the single results of the two tests. Therefore, a melting range was defined beginning at the measured onset-temperatures up to the defined peak-temperatures. Further, increase in the temperature i.e., >280°C led to thermal decomposition of the test substance. Under the test conditions, the melting point of the test substance ranged from 188 - 205°C.
Referenceopen allclose all
Results:
- Two tests were carried out and in both tests, an endothermal evaporation of the isopropanol content (1.6%) was observed at approximately 90 °C. The recorded melting peaks were not sharp enough to calculate an exact melting temperature out of the single results of the two tests. Therefore a melting range was defined beginning at the measured onset-temperatures up to the defined peak-temperatures.
Measured temperatures (K/°C) |
1sttest |
2ndtest |
Mean value |
Evaporation of isopropanol |
362.5 / 89.3 |
363.5 / 90.3 |
363.0 / 89.8 |
Onset temp. of melting process |
463.0 / 189.8 |
459.2 / 186.0 |
461.1 / 187.9 |
Peak temp. of melting process |
478 / 205 |
478 / 205 |
478 / 205 |
Onset temp. of exothermal decomposition |
556 / 283 |
551 / 278 |
554 / 281 |
Description of key information
The melting point was determined in two separate studies according to OECD Guideline 102 and EU Method A.1 using differential scanning calorimetry (DSC) (Möller, 2011 and Schneider, 2000).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 94 °C
Additional information
- Möller, 2011: melting point range of 94 - 100°C.
- Schneider, 2000: melting point range of 188 - 205°C.
As a conservative approach, the lower melting point has been considered further for hazard/risk assessment.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
