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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:
from 2008-07-31 to 2008-08-29
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study is regarded as reliable without restrctions because it was conducted in accordance with GLP regulation and guideline.
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
December 1992
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
July 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Version / remarks:
1996
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
air comparison pycnometer (for solids)
Key result
Type:
relative density
Density:
1.129 other: dimensionless
Temp.:
20 °C
Key result
Type:
density
Density:
1.129 g/cm³
Temp.:
20 °C

Result

The density of the test item was calculated to be 1.129 g/cm3. The experiments were performed at 20 °C. Therefore, the value corresponds to the relative density (D420) of the test item. For details see Table 1.

In conclusion, the relative density (D420) of the test item at 20 °C was determined to be 1.129 ± 0.0034 (95 % confidence interval).

 

Table 1.: Results of the determination of the relative density at 20 °C

 

Mass (g)

Volume (cm3)

Density (g/cm3)

Sample 1.

1.433

1.268

1.130

Sample 2.

1.525

1.356

1.125

Sample 3.

1.438

1.273

1.130

Sample 4.

1.438

1.270

1.132

Sample 5.

1.462

1.297

1.127

Average density (g/cm3)

1.129

Relative Density

1.129

Standard Deviation

0.003

(95 %) Confidence Interval

0.0034

 

Conclusions:
Relative density (D420) of the test item at 20 °C was determined to be 1.129 ± 0.0034 (95 % confidence interval).
Executive summary:

A study according OECD 109 and EU Method A.3 was performed in order to determine the relative density of the test item. The test item was analysed in its initial form, using an air comparison pycnometer. The mass and volume were measured at 20 °C and the mean of five measurements was reported. Average density of the test item was calculated to be 1.129 g/cm³. The relative density (D420) of the test item at 20 °C was determined to be 1.129 ± 0.0034 (95 % confidence interval).

Description of key information

Using the air comparison pycnometer method, the relative density of the test item at 20 °C was determined to 1.129 ± 0.0034 (95 % confidence interval).

Key value for chemical safety assessment

Relative density at 20C:
1.129

Additional information

A study according OECD 109 and EU Method A.3 was performed in order to determine the relative density of the test item. The test item was analysed in its initial form, using an air comparison pycnometer. The mass and volume were measured at 20 °C and the mean of five measurements was reported. Average density of the test item was calculated to be 1.129 g/cm³. The relative density (D420) of the test item at 20 °C was determined to be 1.129 ± 0.0034 (95 % confidence interval).

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