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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:
Testing was conducted between 15 June 2011 and 20 December 2011.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.
Qualifier:
equivalent or similar to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.61 other: Unitless
Temp.:
21 °C

Results

Calibration

The pressure readings (P1and P2) and the calculated volume for the calibration sphere are shown in the following table:

Determination

P1

(psi)

P2

(psi)

P3

(psi)

P4

(psi)

Reference Cell Volume (cm3)

Sample Cell Volume (cm3)

1

17.751

6.719

17.947

8.892

90.700

148.229

2

17.327

6.559

17.066

8.454

90.781

149.037

Sample

The pressure readings, calculated volumes and density values obtained for the test item are shown in the following table:

Determination

Test

P1(sample)

(psi)

P2(sample)

(psi)

Volume
(cm3)

Density

(kg/m3)

Mean Density (kg/m3)

1

A

17.123

8.038

46.419

1.601 x 103

1.613 x 103

B

17.230

8.085

46.342

1.603 x 103

C

17.031

7.956

45.476

1.634 x 103


Determination

Test

P1(sample)

(psi)

P2(sample)

(psi)

Volume
(cm3)

Density

(kg/m3)

Mean Density (kg/m3)

2

A

17.338

8.150

46.682

1.600 x 103

1.612 x 103

B

17.037

7.972

45.798

1.631 x 103

C

17.210

8.084

46.542

1.605 x 103

Overall mean density:        1.613 x 103 kg/m3
Relative density:                 1.61
Temperature:                       21.0 ± 0.5ºC

Conclusions:
The relative density of the test item has been determined to be 1.61 at 21.0 ± 0.5°C.
Executive summary:

The determination was carried out using a gas comparison pycnometer, designed to be compatible with Method A3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The relative density of the test item has been determined to be 1.61 at 21.0 ± 0.5°C.

Description of key information

The relative density of the test item has been determined to be 1.61 at 21.0 ± 0.5 °C

Key value for chemical safety assessment

Relative density at 20C:
1.61

Additional information

1.61 at 21.0 ± 0.5°C, using a gas pycnometer, designed to be compatible with Method A3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.