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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 2017-08-28 to 2017-08-30
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
other: phase transition from liquid to solid state
Key result
Melting / freezing pt.:
< -29 °C
Remarks on result:
other: no main test performed

Table 1. Observations during the preliminary freezing point test

Temperature
(°C)
Storage period
(hours)
State of samples
Replicate 1 Replicate 2
-29 24 liquid liquid
-29 48 liquid liquid
Conclusions:
As the test item was not frozen in the course of the preliminary test, the main test was not performed. Based on the preliminary test, the freezing point of the test item was determined to be below -29 °C.
Executive summary:

A study was conducted according to OECD TG 102, Regulation (EC) No 440/2008 method A.1 and guideline OPPTS 830.7200 in order to determine the freezing point of the test item. In the test the temperature of the phase transition from the liquid to the solid state was determined. As the test item was not frozen in the course of the preliminary test, the main test was not performed. Based on the preliminary test, the freezing point of the test item was determined to be below -29 °C.

Description of key information

As the test item was not frozen in the course of the preliminary test, the main test was not performed. Based on the preliminary test, the freezing point of the test item was determined to be below -29 °C.

Key value for chemical safety assessment

Additional information

A study was conducted according to OECD TG 102, Regulation (EC) No 440/2008 method A.1 and guideline OPPTS 830.7200 in order to determine the freezing point of the test item. In the test the temperature of the phase transition from the liquid to the solid state was determined. As the test item was not frozen in the course of the preliminary test, the main test was not performed. According to Annex VII, point 7.2, column 2 of Regulation (EC) No. 1907/2006 the study does not need to be conducted below a lower limit of -20 °C. Based on the preliminary test, the freezing point of the test item was determined to be below -29 °C (reference 4.2 -1).