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Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

experimental dates: 27-28 March 2017

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 considered to be adequately characterised. Therefore full validation applies.

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

27. July 1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

Principles of method if other than guideline:

Not applicable

GLP compliance:

yes (incl. QA statement)

Remarks:

Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht (inspected on 13 & 14 October 2014, 2010 / signed on 08 April 2015)

Type of method:

other: screening test at -20°C and -80°C

Specific details on test material used for the study:

Storage conditions: the test item was stored in a metal bottle as received in the dark from the day of receipt till the 18. Jan. 2017 at room temperature and was then stored in a closed vessel (original metal bottle) at 3.0- 8.0 °C in the dark.

Key result

Melting / freezing pt.:

< -80 °C

Decomposition:

no

Table 4.2/1: Values Pre-Test

 

-21.1 °C*	-80 °C*
Liquid	Liquid (more viscous)

* these temperatures were read by inspection of the test item after storage.

No colour change was observed.

 

Main test

Not carried out, because the liquid was still liquid after storage at -80 °C.

Conclusions:

No further testing required (< -20°C).

Executive summary:

The freezing point of the test substance was determined according to OECD 102/EU A1 guideline. In a pre-test, the test item was stored at -80 and -20 °C for 24 h.

The test item was still liquid at - 80 °C. Therefore, no additional test was conducted and the freezing point is stated as:< - 80 °C (< 193.15 K).

Description of key information

Freezing point < -80°C.

No further testing required.

Additional information

A fully reliable experimental study, conducted according to a recognized OECD/EC method and under GLP, is available. It is considered as a key study. As no freezing was observed down to -80°C, the result is expressed as a limit value, and cannot be retained as key data.