Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11 October 2018 to 12 October 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Key result
Melting / freezing pt.:
>= 62.1 - <= 70.2 °C
Atm. press.:
>= 98.5 - <= 98.9 kPa
Decomposition:
no

Using a linear heating rate of 0.5°C/minute, the melting range of the test material was found to be 62.1 - 70.2°C ± 0.16°C (95 % confidence interval), i.e. 335.2 – 343.3 K. The details are summarised below.

 

Measured temperatures corresponding to the melting of the test material (three experiments (I, II, III) with three parallel samples each (1, 2, 3)).

 

Measured Temperatures during the main Study (°C)

 

I / 1

I / 2

I / 3

II / 1

II / 2

II / 3

III / 1

III / 2

III / 3

Mean

Beginning of melting

61.9

61.9

61.9

61.8

61.9

61.9

62.4

62.4

62.4

62.1 ± 0.20

Final stage of melting

69.9

69.9

69.9

70.2

70.2

70.3

70.3

70.4

70.4

70.2 ± 0.16

 

No significant change of colour or other changes suggesting degradation were observed until the melting of test material.

Conclusions:
Under the conditions of the study the melting point of the test material was determined to be 62.1 - 70.2°C.
Executive summary:

The melting point of the test material was assessed in accordance with the standardised guidelines OECD 102 and EU Method A.1 under GLP conditions.

For the determination of the melting point or melting range, the capillary method using a metal block was applied. A small amount of the test material was placed in a capillary tube and packed tightly, then heated in the electronic controlled sample block and the temperature around the sample was displayed. The sample was observed visually while raising the temperature at an appropriate rate in an appropriate range. The initial and final melting temperatures were determined.

Using a linear heating rate of 0.5°C/minute the melting range of the test material was found to be 62.1 - 70.2°C ± 0.16°C (95 % confidence interval), i.e. 335.2 – 343.3 K. No significant change of colour or other changes suggesting degradation were observed until the melting of test material.

Under the conditions of the study the melting point of the test material was therefore determined to be 62.1 - 70.2°C.

Description of key information

Under the conditions of the study the melting point of the test material was determined to be 62.1 - 70.2°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
62.1 °C

Additional information

The melting point of the test material was assessed in accordance with the standardised guidelines OECD 102 and EU Method A.1 under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

For the determination of the melting point or melting range, the capillary method using a metal block was applied. A small amount of the test material was placed in a capillary tube and packed tightly, then heated in the electronic controlled sample block and the temperature around the sample was displayed. The sample was observed visually while raising the temperature at an appropriate rate in an appropriate range. The initial and final melting temperatures were determined.

Using a linear heating rate of 0.5°C/minute the melting range of the test material was found to be 62.1 - 70.2°C ± 0.16°C (95 % confidence interval), i.e. 335.2 - 343.3 K. No significant change of colour or other changes suggesting degradation were observed until the melting of test material.

Under the conditions of the study the melting point of the test material was therefore determined to be 62.1 - 70.2°C.