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Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The study was conducted using a relevant test method but not in compliance with any known quality system.
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
not specified
GLP compliance:
not specified
Type of method:
thermal analysis
Remarks:
Differential thermal analysis
Melting / freezing pt.:
-99.1 °C
Atm. press.:
1 013 hPa
Melting / freezing pt.:
174 K
Atm. press.:
1 013 hPa
Conclusions:
A melting point value of -99.1°C (174 K) was determined for the substance using differential thermal analysis. The result is considered reliable.

Description of key information

Freezing point (tetramethylsilane): -99.1°C

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-99.1 °C

Additional information

A freezing point value of -99.1°C (174 K) was determined for the substance using a differential thermal analysis method. The result is considered to be reliable and selected as key study. In other secondary sources to which reliability could not be assigned, freezing point values of -99°C, -102.2°C and -100.2°C were reported for the substance. The available values are consistent that the freezing point of the substance is <-20°C.

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