2,5-diphenyloxazole

Density

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 guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Test material

Test material information

1

Reference substance name:

2,5-diphenyloxazole

EC Number:

202-181-3

EC Name:

2,5-diphenyloxazole

Cas Number:

92-71-7

Molecular formula:

C15H11NO

IUPAC Name:

2,5-diphenyl-1,3-oxazole

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

Density

Density 1

Key result

Type:

density

Density:

>= 1 243 - <= 1 245 kg/m³

Temp.:

20 °C

Density 2

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.