Registration Dossier

Administrative data

Endpoint:
boiling point
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Cross-reference
Reason / purpose:
data waiving: supporting information
Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 Sep 2017 - 08 Jan 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
2008
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
1998
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Key result
Decomposition:
yes
Decomp. temp.:
150 °C
Remarks on result:
other: Glass transition point: -49.6°C. No melting/freezing point was determined between 25°C and -90°C.

TGA EXPERIMENT (PRELIMINARY TEST)

Significant decrease of weight from 180°C. 25% weight loss at 190°C and 70% weight loss at 294°C.

After the experiment, a black molten residue remained in the sample container (original colour: pale yellow). The change of the colour indicated reaction and/or decomposition of the test item.

 

DSC EXPERIMENT 1

During cooling a glass transition was observed between -40°C and -80°C. During heating a glass transition was observed between -25°C and -75°C. The inflection point was -49.201°C. From 150°C a slight deviation of the baseline into the exothermic direction was observed. After the experiment, a colourless molten residue remained in the sample container.  The exothermic effect was probably obtained due to reaction and/or decomposition of the test item.

DSC EXPERIMENT 2

A higher end temperature was used in the Experiment 2 to gain more insight into the slight exothermic effect observed in Experiment 1. Similar results as in Experiment 1 were obtained for the glass transition. The inflection point of the glass transition was 50.052°C. From 150°C on, however, a large endothermic effect followed by an exothermic effect was observed. After the experiment, a black molten residue remained in the sample container. The change of the colour indicated reaction and/or decomposition of the test item.

DATA HANDLING

The glass transition temperature was determined as the mean inflection point of Experiment 1 and Experiment 2.

 

Conclusions:
A glass transition temperature of -49.6°C was determined. The substance has no melting/freezing temperature between 25°C and -90°C.
Executive summary:

Differential Scanning Calorimetry (DSC) experiments were performed in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200.

The liquid substance has no melting/freezing temperature between 25°C and -90°C. From duplicate measurements the mean glass transition temperature was determined to be -49.6°C.

During heating from 25°C, reaction and/or decomposition of the substance started at 150°C.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Results and discussion

Applicant's summary and conclusion