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Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 January 2017 to 10 February 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:
0.937 other: dimensionless
Temp.:
19 °C

CALIBRATION

- Pressure readings are shown in Table 6 (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 6 – PRESSURE READINGS AND CALCULATED VOLUMES

Determination

P1 (psig)

P2 (psig)

P3 (psig)

P4 (psig)

Reference cell volume (cm3)

Sample cell volume (cm3)

1

17.150

6.493

17.464

8.653

90.778

148.995

2

17.266

6.540

17.315

8.581

90.897

149.077

3

17.272

6.544

17.137

8.492

91.026

149.225

Mean reference cell volume: 90.901 cm3

Mean sample cell volume: 149.099 cm3

 

SAMPLE

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

TABLE 7 – PRESSURE READINGS, CALCULATED VOLUMES AND DENSITY VALUES

Determination

Replicate

P1sample (psig)

P2sample (psig)

 

Volume (cm3)

 

Density (kg/m3)

1

A

17.170

7.905

42.6

942

1

B

17.273

7.961

42.8

937

1

C

17.217

7.933

42.7

938

2

A

17.154

7.764

39.2

938

2

B

17.268

7.822

39.3

934

2

C

17.217

7.797

39.3

935

Mean density for Determination 1 = 939 kg/m3

Mean density for Determination 2 = 936 kg/m3

Overall mean density = 937 kg/m3

Relative density = 0.937

Temperature = 19 ± 0.5 °C

Conclusions:
The density of the test item was determined to be 937 kg/m3 at 19.0 ± 0.5 °C and the relative density was reported as 0.937.
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 937 kg/m3 at 19.0 ± 0.5 °C and the relative density was reported as 0.937.

Description of key information

The density of the test item was determined to be 937 kg/m3 at 19.0 ± 0.5 °C and the relative density was reported as 0.937.

Key value for chemical safety assessment

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 937 kg/m3 at 19.0 ± 0.5 °C and the relative density was reported as 0.937.