Registration Dossier

Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August to November 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
The determination was carried out by differential scanning calorimetry, using a procedure designed to be compatible with Method A.2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995

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.2 (Boiling Temperature)
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: crystalline
Details on test material:
White powder
Specific details on test material used for the study:
Batch 18114773 - Purity > 99.5%
Aliquots of test item (see following table) were placed in pierced crucibles and were subjected to a thermal program from 20 to 450 °C at 20 °C/min.

Results and discussion

Boiling point
Key result
Atm. press.:
>= 100.9 - <= 101.4 kPa
Decomposition:
yes
Remarks:
As the test item decomposed, no value for boiling point could be determined.
Decomp. temp.:
>= 237 °C

Applicant's summary and conclusion

Conclusions:
The endotherms observed in each determination at approximately 140 to 160 °C was attributed to the melting of the test item, as quantified in Section 4.1 of the report.
As a result of the initial low rate of enthalpy change during decomposition, the onset temperature could only be approximated. To present a worst case scenario with respect to thermal stability, the lowest observed onset temperature has been reported as the overall result.
Similar thermographic profiles were obtained using air and nitrogen atmospheres. This indicated that the decomposition was probably thermal and not oxidative.

The test item decomposed from approximately 237 °C (511 K) at 100.9 to 101.4 kPa. As the test item decomposed, no value for boiling point could be determined.
Executive summary:

The test item decomposed from approximately 237 °C (511 K) at 100.9 to 101.4 kPa. As the test item decomposed, no value for boiling point could be determined.