Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 13 March 2017 to 14 March 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guidelineopen allclose all
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

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Test material form:
liquid: viscous
Details on test material:
Appearance: colourless or light yellow viscous liquid
Storage conditions: at room temperature, container tightly closed, flushed with nitrogen.

Results and discussion

Melting / freezing point
Key result
Decomposition:
yes
Decomp. temp.:
> 200 °C
Remarks on result:
other: Glass transition point: -68.1°C. No melting between -90°C and the glass transition point.

Any other information on results incl. tables

TGA EXPERIMENT (PRELIMINARY TEST)

From 275°C upwards the weight of the sample decreased significantly: 25% and 70% weight loss at 359°C and 456°C, resp. After the experiment, a dark brown residue remained in the sample container. The change of the colour indicated reaction and/or decomposition of the test item.

 

DSC EXPERIMENT 1

During cooling a phase transition was observed between -80°C and -60°C. During heating glass transition was observed between -75°C and -50°C with the inflection point at -68.395°C. An endothermic (reaction/decomposition) peak between 200°C and 359°C was observed. After the experiment, a yellow residue remained in the sample container.

 

DSC EXPERIMENT 2

The inflection point of the glass transition was determined to be -67.890°C. No change in appearance was observed after the experiment.

 

DATA HANDLING

The mean (n=2) inflection point was reported as the glass transition point of the substance: -68.1°C.

Applicant's summary and conclusion

Conclusions:
The glass transition point of the substance was determined to be -68.1°C. Melting of the substance was not observed between between -90°C and the glass transition point.

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 glass transition temperature of the substance was determined in duplicate obtaining a mean value of -68.1°C. Melting of the substance was not observed between between -90°C and the glass transition point. Reaction and/or decomposition of the substance started at temperatures above 200°C. Boiling of the substance was not observed below the temperature at which reaction and/or decomposition started.