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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:
26-27 March 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
The study was conducted according to an internationally recognised method. Test substance is adequately characterised. Therefore full validation applies.
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
2008
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. certificate)
Remarks:
Inspected on 15 and 16 November 2017/ Signed on 15 May 2018
Type of method:
method to determine freezing temperature
Key result
Melting / freezing pt.:
<= -80 °C
Decomposition:
no
Remarks on result:
other: Pressure not specified but assumed to be ambient

After evaluation the following values were recorded:

Table: Values Pre-Test

Room Temperature

5.3°C

-20.1°C

-80°C

Slightly yellow

liquid

Slightly yellow

liquid

A bit viscouser than at room temperature

Not flowable anymore but still soft and piercable

 

After performance of the pre-test, the sponsor was consulted. As according to REGULATION (EC) No 1907/2006 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL, Annex VII, dated 18. December 2006 (last amended by Commission Regulation (EU) 2016/2235 of 12 December 2016), the determination of the melting / freezing point does not need to be conducted below a lower limit of - 80 °C; therefore no main test was performed.

Conclusions:
In a pre-test, the test item was still unfrozen at – 80 °C.
At -80 °C the test item was still soft and piercable. According to REGULATION (EC) No 1907/2006 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL, Annex VII, dated 18. December 2006 (last amended by Commission Regulation (EU) 2016/2235 of 12 December 2016), the determination of the melting- / freezing point does not need to be conducted below a lower limit of - 80 °C.
Therefore, no additional test was conducted and the freezing/melting point is stated as: < - 80 °C (< 193.15 K).
Executive summary:

This study was performed in order to determine the freezing point or the melting range of the test item according OECD 102 resp. EU A.1.

At -80 °C the test item was still soft and piercable. According to REGULATION (EC) No 1907/2006 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL, Annex VII, dated 18. December 2006 (last amended by Commission Regulation (EU) 2016/2235 of 12 December 2016), the determination of the melting- / freezing point does not need to be conducted below a lower limit of - 80 °C.

Therefore, no additional test was conducted and the freezing/melting point is stated as: < - 80 °C (< 193.15 K).

Description of key information

At -80 °C the test item was still soft and piercable. According to REGULATION (EC) No 1907/2006 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL, Annex VII, dated 18. December 2006 (last amended by Commission Regulation (EU) 2016/2235 of 12 December 2016), the determination of the melting- / freezing point does not need to be conducted below a lower limit of - 80 °C.

Therefore, no additional test was conducted and the freezing/melting point is stated as: < - 80 °C (< 193.15 K).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-80 °C

Additional information

A fully reliable experimental study, conducted according to OECD 102/ EU A1 guideline is available.

It is considered as a key study, and the result is retained as key data.