Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
01 March 2017 - 05 May 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 (incl. certificate)
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Test material form:
solid: particulate/powder
Details on test material:
- Appearance: Pink powder
- Storage conditions: At room temperature

Results and discussion

Melting / freezing point
Key result
Decomposition:
yes
Decomp. temp.:
175 °C
Remarks on result:
other: the substance has no melting point

Any other information on results incl. tables

TGA EXPERIMENT (PRELIMINARY TEST)

Significant decrease of weight from 275°C upwards. At 549°C the sample weight had decreased by 16%.

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

DSC EXPERIMENT

DSC curve: see Figure 1 in the attached study report.

The DSC-curve obtained showed an exothermic peak between 25°C and 150°C. Based on the weight loss observed in the TGA experiment it was assumed that this effect was most likely due to evaporation of solvent impurities. From 175°C several effects were observed which are related to reaction and/or decomposition of the test item. After the experiment, a black charred residue remained in the sample container.

Applicant's summary and conclusion

Conclusions:
Melting of the test item was not observed below the temperature at which reaction and/or decomposition started (i.e. at 175°C). The substance has no melting temperature.
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 substance has no melting temperature. During heating from 25°C to 400°C reaction and/or decomposition of the substance started at 175°C. Melting of the test item was not observed below the temperature at which reaction and/or decomposition started.