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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:
16 February 2017 to 03 March 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
0.928 other: dimensionless
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

17.353

6.572

17.270

8.560

90.796

148.946

2

17.291

6.550

17.349

8.601

90.820

148.932

3

17.218

6.526

17.249

8.551

91.051

149.175

Mean reference cell volume: 90.889 cm3

Mean sample cell volume: 149.018 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

31.2891

59.9100

28.6209

2

33.4146

65.5292

32.1146

 

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

17.368

6.996

14.3

17.410

8.118

45.0

1

B

17.473

7.036

14.2

17.438

8.131

45.0

1

C

17.286

6.960

14.2

17.594

8.204

45.0

2

A

17.367

7.018

15.0

17.208

8.227

49.8

2

B

17.495

7.072

15.1

17.231

8.235

49.7

2

C

17.680

7.146

15.0

17.338

8.286

49.7

 

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

14.2

45.0

30.8

930

2

15.0

49.8

34.7

925

Overall mean density = 927 kg/m3

Relative density = 0.928

Temperature = 20.0 ± 1.0 °C

Conclusions:
The density of the test item was determined to be 927 kg/m3 at 20.0 ± 1.0 °C and the relative density was reported as 0.928.
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 927 kg/m3 at 20.0 ± 1.0 °C and the relative density was reported as 0.928.

Description of key information

The density of the test item was determined to be 927 kg/m3 at 20.0 ± 1.0 °C and the relative density was reported as 0.928 (OECD 109 and EU Method A.3).

Key value for chemical safety assessment

Relative density at 20C:
0.928

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 927 kg/m3 at 20.0 ± 1.0 °C and the relative density was reported as 0.928.