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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 August 29th, 2018 to August 31st, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Key result
Melting / freezing pt.:
136.6 °C
Atm. press.:
1 011.2 hPa
Decomposition:
no
Sublimation:
no

Table 1. The measured values of the test item melting point

Sample

Atmospheric pressure, hPa

Melting point, ºC

1

1011.2

136.6

2

136.6

3

136.7

Average value ± standard deviations, ºC

136.6 ± 0.1
Conclusions:
The melting point of the test item was observed at temperature of 136.6 ± 0.3 ºC.
Executive summary:

A study to determine the melting point of the test item was performed according to EU method A.1 (capillary method) / OECD 102, under GLP conditions. A preliminary test was carried out in order to determine the melting temperature range for test item. Based on the results of the preliminary test, a main test consisting of three series of measurements in the range of 130.0 – 400.0 ºC was performed.

The samples started to melt at 136.6, 136.6 and 136.7ºC under atmospheric pressure (1011.2 hPa), respectively. Therefore, the test item has a melting point of 136.3 ± 0.3 ºC (at 1011.2 hPa).

Description of key information

Key study. Method according to OECD 102 / EU Method A.1 (capillary tube method), GLP study. The melting point of the test item is 136.3 ± 0.3 ºC (at 1011.2 hPa).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
136.3 °C

Additional information