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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 2018-08-13 to 2018-08-30
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
method to determine freezing temperature
Key result
Melting / freezing pt.:
< -30 °C
Decomposition:
no
Sublimation:
no

After 24 hours both replicates were liquid. After another 24 hours (at 48 hours) in the freezer the test item was still liquid.

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 freezing point of the test item is below -30 °C.

Conclusions:
The freezing temperature of the test item was determined to be <-30 °C.
Executive summary:

A study was conducted according to OECD TG 102, Regulation (EC) No 440/2008 method A.1 and EPA OPPTS 830.7200 to determine the freezing point of the test. In order to check the approximate freezing temperature 1 mL of the test item was transferred into 2 mL cryovials. Four replicate tubes were placed in the freezer. After 24 hours storage period two replicate tubes were removed and the physical state of the test item was examined. The remaining tubes were turned over and immediately put back into the freezer for another 24 hours. Then these tubes were checked if the test item could flow through to the cap of the tube. The test item did not freeze in the course of the preliminary test, therefore, no main test was performed and the freezing point of the test item was stated to be below -30 °C.

Description of key information

The freezing temperature of the test item was determined to be <-30 °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 EPA OPPTS 830.7200 to determine the freezing point of the test. In order to check the approximate freezing temperature 1 mL of the test item was transferred into 2 mL cryovials. Four replicate tubes were placed in the freezer. After 24 hours storage period two replicate tubes were removed and the physical state of the test item was examined. The remaining tubes were turned over and immediately put back into the freezer for another 24 hours. Then these tubes were checked if the test item could flow through to the cap of the tube. The test item did not freeze in the course of the preliminary test, therefore, no main test was performed and the freezing point of the test item was stated to be below -30 °C.