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Density

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Reference
Endpoint:
bulk density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
14 APR 2003 - 05 JUN 2003
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
not specified
GLP compliance:
yes
Type of method:
air comparison pycnometer (for solids)
Type:
bulk density
Density:
1 838 kg/m³
Temp.:
21.5 °C

The pressure readings (P1 and P2) and the calculated volume for the calibration ball:

Determination

P1

P2

Volume (cm3)

Certified volume (cm3)

Tolerance (cm3)

A

17.442

8.633

56.4

56.6

± 0.5

B

17.138

8.483

56.4

56.6

± 0.5

The pressure readings calculated volumes and density values obtained for the test material:

Determination

P1

P2

Volume

(cm3)

Density

(kg/m3)

A

17.117

7.708

38.2

1842.6

B

17.115

7.725

38.7

1833.6

Temperature: 21.5 ± 0.5 ºC

Mean density: 1838.1 kg/m3

Conclusions:
The density of the test material was determined to be 1838.1 kg/m3 (1.8381 kg/L) at 21.5 ± 0.5 ºC.
Executive summary:

In a GLP study according to OECD Guideline 109 the density of the test item was determined with an air comparison pycnometer to be 1.8381 kg/L at 21.5 °C.

Description of key information

In a GLP study according to OECD Guideline 109 the density of the test item was determined with an air comparison pycnometer to be 1.8381 kg/L at 21.5 °C.

Key value for chemical safety assessment

Relative density at 20C:
1.838

Additional information

The relative density was calculated by dividing the measured density at 21.5 °C (temperature not realy of relevance for solid substances) through the density of water at 4 °C.

The value is supported by literature: Mellor published in 1980 ( Mellor's comprehensive treatise on inorganic and theoretical chemistry) that boric oxide has a density of 1.84 g/mL.