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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:
2013-08-20 to 2013-09-23
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
not conducted in accordance with known quality system
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
no
Type of method:
thermal analysis
Remarks:
Differential Scanning Calorimetry (DSC)
Melting / freezing pt.:
-55.6 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: -55.6±0.5°C
Conclusions:
A melting point value of -55.6±0.5°C was obtained using an appropriate test method. The result is considered to be reliable.

Description of key information

Melting point (2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane): -55.6±0.5°C (OECD 102)e

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-55.6 °C

Additional information

Three reliable studies are available for the melting point of Vi4 -D4. A melting point value of -55.6±0.5°C was obtained for the substance in accordance with EU Method A.1 and OECD Guideline 102 but not in compliance with any known quality system. The result is considered to be reliable and selected as key study.

This result is supported by measured melting point values for Vi4 -D4 of -43.5°C and -42.7°C which were determined using relevant methods.

All available studies report that the melting point of the substance is <-20°C.