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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:
Testing was conducted on 18 March 2010.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
Date of GLP inspection: 2009-09-15 Date of Signature on GLP certificate: 2009-11-26
Type of method:
air comparison pycnometer (for solids)
Key result
Type:
relative density
Density:
2.58
Temp.:
20.5 °C

Results

Calibration

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

Determination

P1

P2

Volume (cm3)

Certified Volume (cm3)

Tolerance

(cm3)

A

17.144

6.710

1.068

1.073

± 0.05

B

17.077

6.677

1.048

1.073

± 0.05

C

17.816

6.970

1.059

1.073

± 0.05

D

17.147

6.706

1.053

1.073

± 0.05

Sample

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

Determination

P1

P2

Volume (cm3)

Density

(kg/m3)

A

17.114

6.786

1.314

2590.2

B

17.271

6.850

1.319

2576.0

Temperature:            20.5 ± 0.5ºC
Mean density:                       2583.1 kg/m3
Relative density:                   2.58

Conclusions:
The relative density of the test item has been determined to be 2.58 at 20.5 ± 0.5°C.

Executive summary:

The relative density of the test material has been determined to be 2.58 at 20.5 ± 0.5°C, 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.

Description of key information

One key study exists. This study (Wooley A, 2010) was conclusive, done to a valid guideline (EU Method A.3) and the study was conducted under GLP conditions.

Key value for chemical safety assessment

Relative density at 20C:
2.58

Additional information