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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:
From July 30 to 31, 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted according to an internationally recognised method, and under GLP. The substance is adequately characterised with its isomers composition. Therefore full validation applies.
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)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected on November 29 and 30, 2010 / signed on April 11, 2011
Type of method:
method to determine freezing temperature
Key result
Melting / freezing pt.:
> -80 - < -20 °C

Table 4.2/1: Values Pre-Test

 

Room Temperature

5 °C

-20 °C

-80 °C

Viscous,

colourless clear liquid

More viscous,

but still liquid

Very viscous

but not solid

Solid like ice

After performance of the pre-test, the sponsor was consulted. As according to REACH annex VII, column 2 of section 7.2, the determination of the melting / freezing point does not need to be conducted below a lower limit of - 20 °C, no main study was performed.

A freezing point of the test item was not determined, as the test item is still liquid at – 20 °C. Therefore, the freezing point is stated as < – 20 °C (<253.15 K).

Conclusions:
No further testing is required.
Executive summary:

The freezing point of the test substance was determined according to OECD 102/EU A1 guideline.

The test item was filled into glass vessels and stored at – 80, – 20 and 5 °C for 25 h.

As the test item is still liquid at – 20 °C, the main study was not required, and the freezing point is stated as < – 20 °C (<253.15 K).

Description of key information

Freezing point (i.e. transition from liquid to solid) < -20°C

Key value for chemical safety assessment

Additional information

A fully reliable experimental study, conducted according to a recognized EC method and under GLP, is available. Therefore, it is considered as a key study. As no solidification was observed at -20°C, no further testing is required. The result is expressed as a limit value, and cannot be retained as key data.