Registration Dossier

Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
8 January 2018 - 29 November 2018
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:
2019

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Details on test material:
- Physical state: powder/solid
- Appearance: white powder
Specific details on test material used for the study:
- Batch n°: 397451
- Expiration date: 07 July 2018
- Purity: 99.86 %
- Storage condition of test material: In refrigerator (2-8°C)

Results and discussion

Boiling point
Key result
Boiling pt.:
219.9 °C
Atm. press.:
1 013.25 hPa
Decomposition:
no

Any other information on results incl. tables

The first experiment to investigate the boiling temperature showed an extrapolated onset temperature of the melting peak at 28.061°C. An endothermic peak was observed between 50°C and 125°C. The endothermic effect was most likely obtained due to evaporation of moisture. Another endothermic peak was observed between 150°C and 250°C and the extrapolated onset temperature was 219.934°C. After the experiment it was observed that the test item had evaporated from the sample container. The second endothermic effect was most likely obtained due to boiling of the test item.

In order to investigate the boiling peak, a higher heating rate of 50°C/minute was used in the second experiment. The extrapolated onset temperature of the melting peak was 28.919°C. The extrapolated onset temperature of the boiling peak was 220.149°C. The endothermic peak had not shifted to significantly higher temperatures. It demonstrated that boiling of the test item caused the endothermic effect. Since a higher heating rate was applied, the extrapolated onsets were not used for calculation of the melting and boiling temperature of the test item. After the experiment it was observed that the test item had evaporated from the sample container.

The last experiment (performed as duplicate determination of the boiling point) showed similar results as the first experiment. The extrapolated onset of the melting peak was 28.026°C. The extrapolated onset of the boiling peak was 219.909°C. After the experiment it was observed that the test item had evaporated from the sample container.

The boiling temperature was determined as the mean boiling temperature of the first and third experiment and equals 219.9°C (493.1K).

Applicant's summary and conclusion

Conclusions:
The boiling temperature is determined to be 219.9°C (493.1K). The atmospheric pressure was 1023 ± 2 hPa.