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Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
22/03/2018 to 11/04/2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Specific details on test material used for the study:
No further details specified in the study report.
Key result
Type:
relative density
Density:
1.406 other: dimensionless
Temp.:
20 °C
Key result
Type:
density
Density:
1 406 kg/m³
Temp.:
20 °C

Determining the Density of the Immersion Liquid

Mass of Empty Pycnometer (g)

23.91

Volume of Pycnometer (ml)

25.0

Mass water & Pycnometer (g)

48.90

Density of Water (g/cm3) (ρw,t)

0.998

Mass of IL & Pycnometer (g)

48.04

Mass IL in Pycnometer (g) (m1)

24.13

Calculated Density of IL (g/cm3)

0.964

Density of IL (kg/cm3)

964

 

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= (m1/ mw) xρw,t

 

where:

m1is the mass of the immersion liquid

mwis the mass of water

ρw,tis the density of water at temperaturet

 

Calculated value for the density of immersion liquid = 964 kg.m-3@ 20°C

 

Determining the Density of the Sample

Run Number

1

2

Mass of empty Pycnometer (g)

23.91

23.91

Mass of Samples & Pycnometer (g)

38.81

39.47

Mass of Sample added to empty Pycnometer (g) ms

14.90

15.56

Mass of Sample, Pycnometer & immersion liquid

52.69

52.97

Mass of immersion liquid added (g) m2

13.88

13.50

Calculated Density of Sample (g/cm3)

1.401

1.411

Density of Sample (kg/cm3)

1401

1411

Mean Result (kg.m-3)

1406

 

Equation 3 (Calculation for the density of the sample)

ρS,t= msρIL/ (m1– m2)

 

where:

msis the mass, in grams, of the sample;

m1is the mass, in grams, of immersion liquid required to fill the empty pycnometer;

m2is the mass, in grams, of immersion liquid added to fill the pycnometer containing the sample;

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

Conclusions:
Mean Result:
Relative density (D204) 1.406
Sample density 1406 kg.m-3 @ 20°C
Executive summary:

Test Objective and Information

The test is conducted to determine the relative density of a solid or liquid substance.

The relative density D204of solids or liquids is the ratio between the mass of a volume of substance to be examined, determined at 20°C, and the mass of the same volume of water, determined at 4°C. The relative density has no dimension.

For solids or liquids, pycnometers of various shapes and with known volumes may be employed. The density is calculated from the difference in weight between the full and empty pycnometer and its known volume. The tests are run at a constant temperature, preferably 20°C, and at least two measurements are generally performed.

The test is conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A3 and OECD Test Guideline 109.

 

Mean Result:

Relative density (D204) 1.406

Sample density 1406 kg.m-3@ 20°C

Endpoint:
relative density
Type of information:
(Q)SAR
Adequacy of study:
supporting study
Study period:
Not yet available
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Remarks:
QSAR Prediction
Principles of method if other than guideline:
Data is QSAR data.
GLP compliance:
yes (incl. certificate)
Type of method:
other:
Remarks:
QSAR prediction
Key result
Type:
relative density
Density:
1.2 g/cm³
Remarks on result:
other: QSAR prediction
Executive summary:

The density has  been  assessed  by  QSAR using model ACD/Labs. The density has been predicted to be 1.2 g/cm3.

Description of key information

Mean Result:

Relative density (D204) 1.406

Sample density 1406 kg.m-3@ 20°C

Key value for chemical safety assessment

Relative density at 20C:
1.406

Additional information

The relative density D204 of solids or liquids is the ratio between the mass of a volume of substance to be examined, determined at 20°C, and the mass of the same volume of water, determined at 4°C. The relative density has no dimension.

For solids or liquids, pycnometers of various shapes and with known volumes may be employed. The density is calculated from the difference in weight between the full and empty pycnometer and its known volume. The tests are run at a constant temperature, preferably 20°C, and at least two measurements are generally performed.

The test is conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A3 and OECD Test Guideline 109.

 

Mean Result:

Relative density (D204) 1.406

Sample density 1406 kg.m-3@ 20°C