Registration Dossier

Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
24th July 2017 to the 20th November 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Test material form:
solid: crystalline
Details on test material:
Expiry date:01 February 2021
Storage conditions: Room temperature in the dark
Batch 21-16131
Specific details on test material used for the study:
Identification:
2,5-diphenyloxazole
Appearance/Physical state:
White crystalline powder
Batch:
21-16131
Purity:
99.9%
Expiry date:
01 February 2021
Storage conditions:
Room temperature, in the dark

Results and discussion

Boiling point
Key result
Boiling pt.:
>= 364.2 - <= 365.3 °C
Atm. press.:
ca. 100.7 kPa

Applicant's summary and conclusion

Conclusions:

The substance, 2,5-diphenyloxazole, leting point was studied in accordance with  EC Method A.2 and OECD Method 103 via a GLP-certified laboratory. The study used the Differential Scanning Calorimeter method and determined that the substance boiling point was 364.7 ± 0.5 °C at 100.7 kPa.
Executive summary:

The substance, 2,5-diphenyloxazole, leting point was studied in accordance with  EC Method A.2 and OECD Method 103 via a GLP-certified laboratory. Aliquots of test item (see following table) were placed in pre-pierced crucibles and were subjected to a thermal program from 200 to 450 °C at 20 °C/min. The standard boiling temperature is defined as the point at which the vapor pressure of a liquid is the same as the standard pressure (101.325 kPa). The extrapolated onset point of the relevant endothermic peak is usually stated as the boiling point.

The study used the Differential Scanning Calorimeter method and determined that the substance boiling point was 364.7 ± 0.5 °C at 100.7 kPa.