Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 18 Sep 2017 to 02 Nov 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

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

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
Test material form:
liquid: viscous
Details on test material:
- Physical appearance: dark brown viscous liquid
- Storage conditions: at room temperature

Results and discussion

Melting / freezing point
Key result
Decomposition:
yes
Decomp. temp.:
75 °C
Remarks on result:
other: Glass transition point: -57.4°C. No melting/freezing point was determined between 25°C and -90°C.

Any other information on results incl. tables

TGA EXPERIMENT (PRELIMINARY TEST)

Significant decrease of weight from 200°C. 25% weight loss at 241°C and 70% weight loss at 337°C.

After the experiment it was observed that the test item was evaporated from the sample container

DSC EXPERIMENT 1

During cooling a glass transition was observed between-50°C and -80°C. 

During heating a glass transition was observed between -75°C and -50°C (inflection point: -57.501°C).

From 75°C an exothermic followed by an endothermic effect was observed. 

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

DSC EXPERIMENT 2

Similar results as in Experiment 1 were obtained. The inflection point of the glass tranisition was -57.253°C. After the experiment, a black molten residue remained in the sample container. 

DATA HANDLING

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

Applicant's summary and conclusion

Conclusions:
A glass transition temperature of -57.4°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 -57.4°C.

During heating from -90°C to 400°C reaction and/or decomposition of the substance started at 75°C.