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Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
08 April 2016 to 09 May 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
0.946 other: dimensionless
Temp.:
20 °C
Type:
density
Density:
946 kg/m³
Temp.:
20 °C

CALIBRATION

- Pressure readings are shown in Table 5 (below) together with the calculated volume for the reference and sample cells.

- As the reference cell volume and sample cell volume were within the defined tolerances (90.953 ± 1.0 cm3 and 149.225 ± 1.0 cm3 respectively), the gas comparison pycnometer was considered acceptable for use.

 

TABLE 5 – PRESSURE READINGS AND CALCULATED VOLUMES

Determination

P1 (psig)

P2 (psig)

P3 (psig)

P4 (psig)

Reference cell volume (cm3)

Sample cell volume (cm3)

1

17.283

6.545

17.157

8.503

90.802

148.973

2

17.188

6.512

17.242

8.549

90.845

148.934

3

17.188

6.513

17.294

8.577

90.828

148.869

Mean reference cell volume: 90.825 cm3

Mean sample cell volume: 148.925 cm3

 

SAMPLE

- The mass of the vessel, vessel and test item, and the calculated mass of test item are shown in Table 6 (below).

- Pressure readings, calculated volumes and density values obtained for the test item are shown in Table 7 (below).

- The calculated volumes and density obtained are shown in Table 8 (below).

 

TABLE 6 – MASS OF VESSEL, VESSEL PLUS TEST ITEM, AND TEST ITEM

Determination

Mass of vessel (g)

Mass of vessel and test item (g)

Mass of test item (g)

1

30.8964

67.6261

36.7297

2

31.7781

67.4780

35.6999

 

TABLE 7 – PRESSURE READINGS

Determination

Replicate

P1sample (psig)

Vessel

P2sample (psig)

Vessel

Volume (cm3)

Vessel

P1sample (psig)

Vessel and test item

P2sample (psig)

Vessel and test item

Volume (cm3)

Vessel and test item

1

A

17.322

6.972

14.1

17.202

8.360

52.9

1

B

17.235

6.936

14.1

17.176

8.347

52.9

1

C

17.158

6.905

14.1

17.154

8.335

52.8

2

A

17.189

6.928

14.4

17.247

8.353

52.2

2

B

17.187

6.929

14.5

17.166

8.314

52.2

2

C

17.248

6.952

14.4

17.168

8.313

52.2

 

TABLE 8 – CALCULATED VOLUMES AND DENSITY

Determination

Mean volume of vessel (cm3)

Mean volume of vessel and test item (cm3)

Volume of test item (cm3)

Density (kg/m3)

1

14.1

52.8

38.8

947

2

14.4

52.2

37.8

945

Overall mean density = 946 kg/m3

Relative density = 0.946

Temperature = 20.0 ± 1.0 °C

Conclusions:
The density of the test item was determined to be 946 kg/m3 at 20.0 ± 1.0 °C and the relative density was reported as 0.946.
Executive summary:

GUIDELINE

The determination was carried out with a gas comparison pycnometer, using a procedure designed to be compatible with Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012.

 

RESULTS

The density of the test item was determined to be 946 kg/m3 at 20.0 ± 1.0 °C and the relative density was reported as 0.946.

Description of key information

The density of the test item was determined to be 946 kg/m3 at 20.0 ± 1.0 °C and the relative density was reported as 0.946 (OECD 109 and EU Method A.3).

Key value for chemical safety assessment

Relative density at 20C:
0.946

Additional information

GUIDELINE

The determination was carried out with a gas comparison pycnometer, using a procedure designed to be compatible with Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012.

 

RESULTS

The density of the test item was determined to be 946 kg/m3 at 20.0 ± 1.0 °C and the relative density was reported as 0.946.