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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
Differential Scanning Calorimetry method
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
Manufacturer Air Products and Chemicals, Inc.
Batch # / Lot # meyersl.20160601
Remarks on result:
not determinable
Remarks:
Only glass transition temperature is indicated, no melting point was observed.
Conclusions:
Hydroxypropyl, N-2-, N,N,N-trimethylammonium 2-ethylhexanoate was tested using Differential Scanning Calorimetry. The sample did not exhibit a freezing point on cooling. The sample shows a glass transition with an average onset of 217.4K (-55.8°C). The Tg reproduced well in the replicates. This would indicate that the sample is amorphous rather than crystalline.
Executive summary:

Hydroxypropyl, N-2-, N,N,N-trimethylammonium 2-ethylhexanoate was tested using Differential Scanning Calorimetry. The sample did not exhibit a freezing point on cooling. The sample shows a glass transition with an average onset of 217.4K (-55.8°C). The Tg reproduced well in the replicates. This would indicate that the sample is amorphous rather than crystalline.

Description of key information

Hydroxypropyl, N-2-, N,N,N-trimethylammonium 2-ethylhexanoate was tested using Differential Scanning Calorimetry. The sample did not exhibit a freezing point on cooling. The sample shows a glass transition with an average onset of 217.4K (-55.8°C). The Tg reproduced well in the replicates. This would indicate that the sample is amorphous rather than crystalline.

Key value for chemical safety assessment

Additional information

Only glass transition temperature is indicated, no melting point was observed.