Registration Dossier

Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
April 2016
Reliability:
1 (reliable without restriction)
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 and Method 830.7220 of the OCSPP Guidelines, August 1996.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report Date:
2016

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Principles of method if other than guideline:
The temperature accuracy of the DSC was checked prior to testing with indium and zinc. These were within defined tolerances and the DSC was therefore considered acceptable for use.
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Details on test material:
White powder
Specific details on test material used for the study:
Batch Number : 18113833
Aliquots of test item (see following table) were placed in crucibles and were subjected to a thermal programs (see following table).
The appearance of the samples was recorded before and after the test, their weight change were recorded after the test.

Results and discussion

Boiling point
Key result
Atm. press.:
>= 99.8 - <= 102.7 kPa
Decomposition:
yes
Remarks:
As the test item decomposed, no value for boiling point could be determined.
Decomp. temp.:
>= 230 °C

Applicant's summary and conclusion

Conclusions:
The temperature program range for determinations 5-8 was based on endotherm temperatures observed during preliminary evaluations (determinations 1-4) carried out using a temperature program of ambient to 400 °C at 20 °C/min. The test items all showed a significant loss of weight when subjected to the temperature program, leaving a black solid post heating, suggestive of decomposition.
The test item was run under a nitrogen atmosphere (determinations 5 and 6) and an air atmosphere (determinations 7 and 8), all 4 determinations obtained similar thermograms, indicating that the decomposition was probably thermal and not oxidative in nature.
During the investigations for melting point determination, the temperature program was limited to 250 °C, the resulting residue obtained was a pale amber shiny solid, with a 10% weight loss. This would conclude that a 50-80% weight loss is associated with temperatures 250 to 400 °C, with no significant thermal event. The melting point determinations, did show the start of decomposition above 230 °C .
It can therefore be concluded that the test item decomposed above 230 °C (503 K) preventing a boiling point from being obtained.
Executive summary:

The test item has been determined to decompose above 230 ± 0.5 °C (503 ± 0.5 K) at 99.8 to 102.7 kPa.

As the test item decomposed, no value for boiling point could be determined.