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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:
6 - 19 Dec 2017
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
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Deviations:
no
GLP compliance:
yes
Type of method:
method to determine freezing temperature
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: 002602456
- Physical state: colorless, clear liquid
- Expiration date of the lot/batch: 07 June 2020

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: at room temperature
- Stability under test conditions: test substance stable in water, but extremely volatile
Key result
Melting / freezing pt.:
< -80 °C
Atm. press.:
1 002 hPa
Decomposition:
no

Crystallization and melting of the test item were not observed by experiments on the DSC (range = -90 °C to 400 °C). Two subsamples of the test substance were then placed in freezers for 22 hours at -19.5 ± 0.5 °C and at -83.5 °C ± 1.8 °C, respectively. After storage it was visually observed that the test substance was a liquid. Based on this it was concluded that the melting temperature of the test substance is < -80 °C.

Conclusions:
A melting point of < -80 °C was observed for MTDID 22327 as determined by EU Method A.1.
Executive summary:

The melting point of MTDID 22327 was tested using differential scanning calorimetry (DSC). Crystallization and melting of the test substance was not observed by DSC. Two subsamples of the test substance were then placed in freezers for 22 hours at -19.5 ± 0.5 °C and at -83.5 °C ± 1.8 °C, respectively. After storage it was visually observed that the test substance was a liquid. Based on this it was concluded that the melting temperature of the test substance is < -80 °C. The study was conducted in accordance with EU Method A.1 and was GLP compliant; therefore the study is considered reliable without restrictions.

Description of key information

A melting point of < -80 °C was observed for MTDID 22327 as determined by EU Method A.1.

Key value for chemical safety assessment

Additional information

The melting point of MTDID 22327 was tested using differential scanning calorimetry (DSC). Crystallization and melting of the test substance was not observed by DSC. Two subsamples of the test substance were then placed in freezers for 22 hours at -19.5 ± 0.5 °C and at -83.5 °C ± 1.8 °C, respectively. After storage it was visually observed that the test substance was a liquid. Based on this it was concluded that the melting temperature of the test substance is < -80 °C. The study was conducted in accordance with EU Method A.1 and was GLP compliant; therefore the study is considered reliable without restrictions.