Registration Dossier

Administrative data

Endpoint:
relative density
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:
EU Method A.3 (Relative Density)
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method

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

Densityopen allclose all
Key result
Type:
density
Density:
>= 1 243 - <= 1 245 kg/m³
Temp.:
20 °C
Key result
Type:
relative density
Density:
ca. 1.24 other: N/A
Temp.:
20 °C

Applicant's summary and conclusion

Conclusions:
The substance (2,5-diphenyloxazole) density was studied in accordance with EC Method A.3 and OECD Method 109 via a GLP-certified laboratory. The study used the Pycnometer method and determined that the substance density was 1244 kg/m^3 at ± 0.5 °C, with a relative density of 1.24.
Executive summary:

The substance, 2,5-diphenyloxazole, leting point was studied in accordance with EC Method A.3 and OECD Method 109 via a GLP-certified laboratory.The volume of the reference cell and the sample cell were determined using the stainless steel calibration sphere. The reference cell was pressurized and the pressure recorded (P1). Following this, the volume of the sample cell was added to the system resulting in a reduction in the pressure which was also recorded (P2). The procedure was then repeated with the sample cell containing the calibration sphere resulting in two more pressure readings (P3 and P4). From these four pressure readings, the volume of the reference cell (Vref) and of the sample cell (Vcell) was calculated. The calibration was performed on the day of testing.

This procedure was performed in triplicate. The ambient temperature was recorded.

The study used the  Pycnometer method and determined that the substance density was 1244 kg/m^3 at ± 0.5 °C, with a relative density of 1.24.