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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:
13.-15.03.2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
GLP compliance:
no
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.418
Temp.:
20 °C

Results of the single determinations with the respective error as well as the mean value and its standard deviation are presented in the following tables:

Table:  Results of Single Determinations

Determination

Density in g/cm3

Error of Determ. in g/cm3

1

1.4201

0.0027

2

1.4165

0.0018

 

Table: Results – Mean Values

Parameter

Value

Unit

Standard Deviation

Relative

Standard Deviation

Volume of Pycnometer

9.93

cm3

0.0018

0.02%

Density of Test Substance

1.4183

g/cm3

0.0025

0.18%

Density of Test Substance

1418.3

kg/m3

2.5

0.18%

Relative Density of Test Substance

1.4183

 

0.0025

0.18%

Using the pycnometer method, a density of 1.4183 ± 0.0025 g/cm3at 20±0.2 °C was measured. This value is the mean of two independent determinations with the maximum error of a single determination.

Standard deviation was 0.0025 g/cm3, showing good correlation of the two determinations.

Conclusions:
The density of the test item barbital sodium was determined according to OECD 109 resp. EU A.3 (pycnometer method). A density of 1.4183 ± 0.0025 g/cm3 at 20.0 ± 0.2 °C (mean of two independent determinations) was measured.

Description of key information

The density of the test item barbital sodium was determined according to OECD 109 resp. EU A.3 (pycnometer method). A density of 1.4183 ± 0.0025 g/cm3 at 20.0 ± 0.2 °C (mean of two independent determinations) was measured.

Key value for chemical safety assessment

Relative density at 20C:
1.418

Additional information