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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:
Feb 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
EU Regulation 440/2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.066 other: relative density has no units
Temp.:
20 °C
Key result
Type:
density
Density:
1 066 kg/m³
Temp.:
20 °C

Determining the Density of the Immersion Liquid

 

Mass of Empty Pycnometer (g)

24.07

Mass water & Pycnometer (g)

49.34

Mass of IL & Pycnometer (g)

49.34

Calculated Density of IL (g/cm3)

0.998

Volume of Pycnometer (ml)

25.3

Density of Water (g/cm3) ρw,t

0.998

Mass IL in Pycnometer (g) (m1)

25.27

Density of IL (kg/m3)

998

 

Equation 1 (Calculation for the density of water)

Mass of water / volume of pycnometer = Density of water

 

Equation 2 (Calculation for the density of immersion liquid)

 

ρIL = (m1x ρw,t)/mW

 

Where : m1is the mass of the immersion liquid

mW is the mass of water

ρw,t is the density of water at temperature t

 

Calculated value for the density of immersion liquid = 998 kg.m-3@ 20°C

 

Determining the Density of the Sample

 

Run Number

1

2

Mass of Empty Pycnometer (g)

24.07

24.07

Mass of Sample & Pycnometer (g)

35.32

36.21

Mass of Sample added to empty Pycnometer (g) ms

11.24

12.13

Mass of Sample, Pycnometer & immersion liquid

50.23

49.92

Mass of immersion liquid added (g) m2

14.91

13.71

Calculated Density of Sample (g/cm3)

1.084

1.048

Density of Sample (kg/m3)

1084

1048

Mean Result (kg.m-3)

1066

 

Equation 3 (Calculation for the density of the sample)

 

ρS,t = (ms xρIL) / ( m1 – m2)

 

Where:

ms is the mass, in grams, of the sample;

m1 is the mass, in grams, of immersion liquid required to fill the empty pycnometer;

m2 is the mass, in grams of immersion liquid added to fill the pycnometer containing the sample;

ρIL is the density of the immersion liquid (as determined by equation 2)

Mean Result :

Relative density: 1.066

Sample density 1066 kg.m-3 @ 20°C

Conclusions:
The relative density of the test substance at 20°C was determined to be 1.066 by pycnometer.
Executive summary:

The relative density of the test substance was determined using pycnometer according to the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A3 and OECD Test Guideline 109. The mean of 2 tests was 1.066.

Description of key information

The relative density of the test substance was determined using pycnometer according to the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A3 and OECD Test Guideline 109. The mean of 2 tests was 1.066.

Key value for chemical safety assessment

Relative density at 20C:
1.066

Additional information