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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:
2016-07-29 - 2017-09-22
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
reference to other study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
27 July 1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
30 May 2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
The Department of Health of the Government of the United Kingdom
Type of method:
pour point
Key result
Melting / freezing pt.:
-12 °C
Decomposition:
no
Sublimation:
no
Remarks on result:
other: see 'Remarks'
Remarks:
As the test item was a complex mixture, it was considered that the pour point method was the most appropriate test procedure. It was not possible the measure the melting point of the active ingredient alone, therefore the test item as a whole had to be measured.

Preliminary Test

The pour point of the preliminary test was -11 ± 3 °C (262 ± 3 K).

Definitive Test

The results of the main test are shown in the following table:

 Observation  Determination 1  Determination 2
 Stationary point (°C)  - 15  - 15
 Pour point (°C)  - 12  - 12

Overall pour point result: -12 ± 3 °C (261 ± 3 K)

Discussion

As the test item was a complex mixture, it was considered that the pour point method was the most appropriate test procedure. It was not possible the measure the melting point of the active ingredient alone, therefore the test item as a whole had to be measured.

Additionally, to act as a comparison, the pour point of the mineral oil (component of the test item) was measured. This was determined to be less than -20 °C (< 253K).

Conclusions:
The pour point of the test item has been determined to be -12 ± 3 °C (261 ± 3 K).
Executive summary:

-12 ± 3 °C (261 ± 3 K) by pour point method, designed to be compatible with Method A.1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Description of key information

-12 ± 3 °C (261 ± 3 K) by pour point method, designed to be compatible with Method A.1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-12 °C

Additional information