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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:
experimental phase from February 09 to 10, 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted according to an internationally recognised method, and under GLP. No relevant deviation was reported. The substance is considered to be adequately characterised. Therefore full validation applies.
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. certificate)
Remarks:
inspected on November 29 and 30, 2010 / signed on April 11, 2011
Type of method:
pycnometer method
Type:
density
Density:
0.901 g/cm³
Temp.:
20 °C
Key result
Type:
relative density
Density:
0.901 other: relative density unitless
Temp.:
20 °C

Table 4.4/1: Results of Single Determinations

 

Determination

Density in g/cm3

Error of Determination in g/cm3

1

0.9017

0.0000

2

0.9012

0.0000

 

Table 4.4/2: Results - Mean Values

 

Parameter

Value

Unit

Standard deviation

Relative Standard deviation

Volume of Pycnometer

25.58

cm3

0.0140

0.05 %

Density of Test item

0.9015

g/cm3

0.0004

0.04 %

Density of Test item

901.5

kg/m3

0.4

0.04 %

Relative Density of Test item (d204)

0.9015

 

0.0004

0.04 %

The two determinations were within the validity criteria (repeatability < 0.5%), therefore no additional measurement was performed.

density of water at test temperature: 0.9982 g*cm-3at 20.0oC (CRC Handbook, 2009)

density of water at 4°C: 0.999975 g*cm-3 (CRC Handbook, 2009)

Deviation: The following deviation from the study plan was documented: the test item was stored in a fridge at 2-8 °C, instead of the recommended 11-25°C range. This is uncritical the sponsor confirmed that storage at this lower temperature for the present study will have no impact.

Conclusions:
The test substance is less dense than water.
Executive summary:

The density of the test substance was measured under GLP according OECD 109 / EU A3 guideline, pycnometer method. Experiment was performed at 20 °C in duplicate, and the mean density was calculated. The relative density was calculated vs water at 4°C.

The density of the test substance has been determined to be 0.9015 ± 0.0004 g/cm3 at 20.0 ± 0.2 °C.

The relative density (D20/4) is 0.9015.

Description of key information

The substance is less dense than water.

Key value for chemical safety assessment

Relative density at 20C:
0.901

Additional information

A fully reliable experimental study, conducted according to a recognized OECD/EC method and under GLP, is available. It is considered as a key study. The result is retained as key data for purpose of CSA.