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Physical & Chemical properties

Melting point / freezing point

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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:
2012-08-29 to 2013-04-12
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
adopted 27 July 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
dated 31 May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
dated Aug 1996
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
method to determine freezing temperature
Key result
Melting / freezing pt.:
-45.05 °C
Atm. press.:
1 013.25 hPa
Decomposition:
no
Sublimation:
no

The determination was performed in duplicate. The following values were recorded:

 

First Determination

Second Determination

 

T sample

in °C

T cooling bath

in °C

T sample

in °C

T cooling bath

in °C

Start

30.1

- 40.2

33.1

- 52.0

Freezing point *

- 44.8

- 51.8

- 45.3

- 51.6

Conclusions:
The freezing point of the test item Incozol 4 was determined to be -45.05 °C ± 0.5 °C at 113.25 hPa.
Executive summary:

A study was conducted according to Regulation (EC) No 440/2008, OECD TG 102 and OPPTS 830.7220 to determine the freezing point of the test item Incozol 4. The test item was filled into glass vessels and stored at – 80, – 20 and 5 °C. The temperature at which solidification of the test item was observed was used as start temperature for the main study. The test item was solid at -30 °C.

Two main tests at - 40.2 °C and -52.0 °C the cooling bath temperature were conducted. In both main tests the test item became impossible to stir the sample at approx. 5 °C. The freezing point of the test item Incozol 4 was determined as -45.05 °C ± 0.5 °C (228.1 ± 0.5 K.). No observations were made which might cause doubts on the validity of the study out-come. Therefore, the result of the study is considered valid.

Description of key information

The freezing point of the test item Incozol 4 was determined to be -45.05 °C ± 0.5 °C at 113.25 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-45.05 °C

Additional information

A study was conducted according to Regulation (EC) No 440/2008, OECD TG 102 and OPPTS 830.7220 to determine the freezing point of the test item Incozol 4. The test item was filled into glass vessels and stored at – 80, – 20 and 5 °C. The temperature at which solidification of the test item was observed was used as start temperature for the main study. The test item was solid at -30 °C. Two main tests at - 40.2 °C and -52.0 °C the cooling bath temperature were conducted. In both main tests the test item became impossible to stir the sample at approx. 5 °C. The freezing point of the test item Incozol 4 was determined as -45.05 °C ± 0.5 °C (228.1 ± 0.5 K.). No observations were made which might cause doubts on the validity of the study outcome. Therefore, the result of the study is considered valid.