Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11 February 2011 – 27 April 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: This study has been performed according to OECD and EC guidelines and in compliance with GLP principles.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report Date:
2011

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
(1995)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
(Official Journal of the European Union no. L142, May 31, 2008)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
other: differential scanning calorimetry (DSC)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): E-Y110
- Test substance storage: At room temperature protected from light
- Stability under storage conditions: Stable
- Description: Orange powder
- Batch: MB-1
- Expiry date: 23 December 2015

Results and discussion

Melting / freezing point
Decomposition:
yes
Decomp. temp.:
350 °C
Remarks on result:
other: no melting of the test substance was observed below 350°C; substance has no melting temperature

Any other information on results incl. tables

Preliminary test

From 360°C upwards the weight of the sample decreased significantly. At 426°C the sample weight had decreased by 25%.

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

Main study

A small endothermic effect was observed between 50 and 350 °C. This effect might be due to evaporation of minor compounds but does not derive from melting or boiling of the major compound in E-Y110. Therefore, this effect was not reported as melting or boiling of the test substance. An exothermic effect was observed between 350°C and 400°C. The effect was due to reaction and/or decomposition of the test substance. After the experiment, a black residue remained in the sample container. The change of the colour indicated reaction and/or decomposition of the test substance.

Applicant's summary and conclusion

Conclusions:
Reaction and/or decomposition of the test substance was observed starting at 350°C (623K). Melting of the test substance was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test substance has no melting temperature.