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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:
23 February 2017 to 20 March 2017
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:
other: gas comparison pycnometer
Key result
Type:
relative density
Density:
0.932 other: dimensionless
Temp.:
20.5 °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

17.670

6.690

17.361

8.601

90.819

149.056

2

17.465

6.612

17.460

8.651

90.764

148.980

3

17.511

6.632

17.456

8.651

90.846

149.023

Mean reference cell volume: 90.810 cm3

Mean sample cell volume: 149.020 cm3

 

SAMPLE

- The pressure readings, calculated volumes and density values obtained for the 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

9.9192

37.8399

27.9207

2

10.0693

37.5454

27.4761

 

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

17.353

6.850

9.78

17.330

7.866

39.8

1

B

17.328

6.840

9.78

17.308

7.856

39.8

1

C

17.358

6.851

9.75

17.401

7.897

39.7

2

A

17.400

6.871

9.87

17.302

7.838

39.4

2

B

17.213

6.798

9.89

17.219

7.800

39.4

2

C

17.419

6.880

9.92

17.329

7.849

39.4

 

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

9.77

39.8

30.0

931

2

9.89

39.4

29.5

932

Overall mean density = 932 kg/m3

Relative density = 0.932

Temperature = 20.5 ± 1.0 °C

Conclusions:
The density of the test item was determined to be 932 kg/m3 at 20.5 ± 1.0 °C and the relative density was reported as 0.932.
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 932 kg/m3 at 20.5 ± 1.0 °C and the relative density was reported as 0.932.

Description of key information

The density of the test item was determined to be 932 kg/m3 at 20.5 ± 1.0 °C and the relative density was reported as 0.932 (OECD 109 and EU Method A.3).

Key value for chemical safety assessment

Relative density at 20C:
0.932

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 932 kg/m3 at 20.5 ± 1.0 °C and the relative density was reported as 0.932.