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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:
May 22 to July 03, 2014
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, and under GLP. The substance is considered to be adequately characterised. Therefore full validation applies.
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
adopted 02. Oct. 2012
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
Council Regulation (EC) No 440/2008 of 30 May 2008
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. certificate)
Remarks:
inspected on 29 and 30 November 2010 / signed on 11 April 2011
Type of method:
pycnometer method
Key result
Type:
density
Density:
1.116 g/cm³
Temp.:
20 °C
Key result
Type:
relative density
Density:
1.116 other: unitless
Temp.:
20 °C

Table 4.4/1: Measured Values

First Determination

Error rel.

Error abs.

Temperature

19.8

°C

 

 

0.1

Density of water

0.998203

g/cm3

 

2.00%

0.0002

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

36.9435

61.8151

61.8159

 39.0239

 62.0338

Temperature in °C

20.4

19.8

20.0

20.2

20.0

Volume of Pycnometer

24.9164

cm3

 

 

 

Density of Replacement Liquid

0.9982

 

 

Error rel.

Error abs.

Density of Test Item

1.1150

g/cm3

 

0.0981%

0.0011

Second Determination

Error rel.

Error abs.

Temperature

20.2

°C

 

 

0.1

Density of water

0.998203

g/cm3

 

2.00%

0.0002

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

36.9434

61.8141

61.8160

 39.1070

62.0452

Temperature in °C

20.0

20.2

19.8

20.2

19.8

Volume of Pycnometer

24.9155

cm3

 

 

 

Density of Replacement Liquid

0.9983

 

 

Error rel.

Error abs.

Density of Test Item

1.1166

g/cm3

 

0.0946%

0.0011

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 4.4/2: Results of Single Determinations

 

Determination

Density in g/cm3

Error of Determ. in g/cm3

1

1.1150

0.0011

2

1.1166

0.0011

 

Table 4.4/3 Results – Mean Values

 

Parameter

Value

Unit

Standard

Deviation

Relative Standard

Deviation

Volume of Pycnometer

24.92

cm3

0.0006

0.00%

Density of Test Item

1.1158

g/ cm3

0.0011

0.10%

Density of Test Item

1115.8

Kg/m3

1.1

0.10%

Relative Density of Test Item

1.1158

 

0.0011

0.10%

 

The density of the test item was calculated as 1.1158 ± 0.0011 g/cm3 at 20.0 ± 0.4 °C, which is the mean of two independent determinations ± the standard deviation. Standard deviation shows good correlation of the two determinations. Therefore, the study is considered valid.

Conclusions:
The density of the test substance was calculated as 1.1158 ± 0.0011 g/cm3 at 20.0 ± 0.4 °C and the relative density is determined as D20/4 = 1.1158 ± 0.0004
Denser than water
Executive summary:

The density of the test substance was measured under GLP according OECD 109 / EU A3 guideline, using the pycnometer method.

Two determinations were performed and the mean value was retained.

This result was then converted to relative density towards water at4°C.

Mean density: 1.1158± 0.0011 g/cm3at 20.0 ± 0.4 °C

Mean relative density (D20/4) : 1.1158

Description of key information

The density of the test item was calculated as 1.1158 ± 0.0011 g/cm3 at 20.0 ± 0.4 °C and the relative density is determined as D20/4 = 1.1158

Key value for chemical safety assessment

Relative density at 20C:
1.116

Additional information

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