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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 November 2017 - 31 Janvier 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
The study was conducted according to an internationally recognised method. Test substance is adequately characterised. Therefore full validation applies.
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
2012
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
2008
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Remarks:
Inspected on 13 and 14 October 2014/ signed on 8 april 2015
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.073 other: no dimension
Temp.:
20 °C

All measured values are given in the following table:

First Determination

 

 

 

 

 

Weighing #

m1

m2

m3

m4

m5

Item

Pycn. empty

Pycn.+ H2O

Pycn. + repl.liq.

Pycn. + test item

Pycn. + test item + repl. liq.

Mass in g

44.1436

94.5384

94.5453

47.5701

94.7768

Temperature in °C

20.0

20.0

20.2

20.0

19.8

Second Determination

 

 

 

 

 

Weighing #

m1

m2

m3

m4

m5

Item

Pycn. empty

Pycn.+ H2O

Pycn. + repl.liq.

Pycn. + test item

Pycn. + test item + repl. liq.

Mass in g

44.1437

94.5371

94.5407

50.3641

94.9882

Temperature in °C

20.0

20.0

19.8

19.8

20.2

The following values were calculated:

First Determination

 

 

Error rel.

Error abs.

Temperature

20.0

 °C

 

0.1

Density of water

0.998203

g/cm3

2.00%

0.0002

Volume of Pycnometer

50.4855

cm3

 

 

Density of Replacement Liquid

0.9983

g/cm3

 

 

Density of Test Item

1.0707

g/cm3

0.0575%

0.0006

Second Determination

 

 

Error rel.

Error abs.

Temperature

20.0

 °C

 

0.1

Density of water

0.998203

g/cm3

2.00%

0.0002

Volume of Pycnometer

50.4841

cm3

 

 

Density of Replacement Liquid

0.9983

g/cm3

 

.

Density of Test Item

1.0757

g/cm3

0.0328%

0.0004

Results:

Parameter

Value

Unit

Standard Deviation

Relative Standard Deviation

Volume of Pycnometer

50.48

cm3

0.0010

0.00%

Density of Test Item

1.0732

g/cm3

0.0035

0.33%

Density of Test Item

1073.2

kg/m3

3.5

0.33%

Relative Density of Test Item

1.0732

 

0.0035

0.33%

Conclusions:
Using the pycnometer method, a density of 1.0732 ± 0.0006 g/cm3 at 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 0.0035 g/cm3, showing good correlation of the two determinations.
Executive summary:

The study was performed in order to determine the density of test item according to OECD 109, resp. EU A.3 guideline, using a pycnometer.

A density of 1.0732 ± 0.0006 g/cm3 at 20 ± 0.2°C was measured.

Description of key information

Using the pycnometer method, a density of 1.0732 ± 0.0006 g/cm3 at 20±0.2°C was measured.

This value is the mean of two independent determinations

Key value for chemical safety assessment

Relative density at 20C:
1.073

Additional information

A fully reliable experimental study, conducted according to OECD 109 /EU A3 guideline, using pycnometer, is available. It is considered as a key study, and the result is retained as key data.