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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:
2002-01-23 to 2002-01-25
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
EEC Commission Directive 92/69 - A3 method (1992)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
OECD Guideline No. 109(1995)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.179
Temp.:
20 °C































Assay No.



m1 (g)



m2 (g)



A (g)



ρ (g/mL)



Density oft he test item



1



59.8008



50.6119



0.06073428



0.998207



1.1792



2



59.8025



50.647



0.0607764



0.998207



1.1784



where m1, is the apparent mass, in grams, of the liquid needed to fill the pycnometer at the determination temperature, m2,  is the apparent mass, in grams, of water needed to fill the pycnometer at the determination temperature, A, is the correction, in grams, due to the pressure of the air = ρa x m2 where ρa is the density of the air = 0.0012 g/mL, and ρ, is the density, in grams per millilitre, of the water at the temperature of the determination.



















Assay No.



Relative density of the test item at +20°C / +4°C



1



1.1792



2



1.1784



Density of water at +20 °C = 0.998207


Density of water at +4 °C = 0.999975

Conclusions:
The relative density of the test item at 20 °C was determined to be 1.179 ± 0.01.
Executive summary:



A study was conducted according to Directive 92/69/EEC method A.3 and OECD Guideline No. 109 (1995) to determine the relative density of the test item. The density was determined in two assays. Using the pycnometer method the density of the test item at 20 °C was determined to be 1.1792 g/cm³ and 1.1784 g/cm³, respectively, and the density of water at 20 °C was determined to be 0.998207 g/cm³. The mean relative density of the test item was determined to be 1.179 ± 0.01.

Description of key information


The relative density of the test item at 20 °C was determined to be 1.179 ± 0.01 (reference 4.4-1).

Key value for chemical safety assessment

Relative density at 20C:
1.179

Additional information



A study was conducted according to Directive 92/69/EEC method A.3 and OECD Guideline No. 109 (1995) to determine the relative density of the test item. The density was determined in two assays. Using the pycnometer method the density of the test item at 20 °C was determined to be 1.1792 g/cm³ and 1.1784 g/cm³, respectively, and the density of water at 20 °C was determined to be 0.998207 g/cm³. The mean relative density of the test item was determined to be 1.179 ± 0.01 (reference 4.4-1).