[No public or meaningful name is available]

Boiling point

Administrative data

Endpoint:

boiling point

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is a solid which decomposes before boiling

Cross-reference

Reason / purpose for cross-reference:

data waiving: supporting information

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 08 May 2017 to 11 May 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

1995

Deviations:

no

Qualifier:

according to guideline

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.:

> 225 °C

Remarks on result:

other: Glass transition point: -65.7°C. No melting between -90°C and the glass transition point.

TGA EXPERIMENT (PRELIMINARY TEST)

From 275°C upwards the weight of the sample decreased significantly: 25% and 70% weight loss at 402°C and 466°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 -90°C and -60°C. During heating glass transition was observed between -75°C and -50°C with the inflection point at -65.770°C. An endothermic (reaction/decomposition) peak followed by an exothermic peak was observed between 225°C and 400°C.  After the experiment, a brown residue remained in the sample container.

DSC EXPERIMENT 2

The inflection point of the glass transition was determined to be -65.722°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: -65.7°C.

 

Conclusions:

The glass transition point of the substance was determined to be -65.7°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 -65.7°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 225°C. Boiling of the substance was not observed below the temperature at which reaction and/or decomposition started.