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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:
27 February - 04 April 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Type:
relative density
Density:
1.03 other: unitless
Temp.:
20 °C

Table 1: Results of relative density study

 Parameter  Replicate 1  Replicate 2
 w1  24.82253  26.60258
 w2  49.40148  49.68423
 w3  44.75170  44.92649
 w4  27.88320  27.63045
 w5  45.39746  45.56983
 W1  24.57895  25.08165
 W2  19.92917  20.32391
 W3  3.06067  3.02787
 W4  17.51426  17.93938
 W5 2.41491  2.38453
     
 ptl  0.80920  0.80869
 Mean ptl 0.80895
 Vs 2.985  2.948
 Dt4  1.025  1.027
 Mean Dt4  1.03

Where:

w1= weight of empty pycnometer (g)

w2= weight of pycnometer and water (g)

w3= weight of pycnometer and displacement liquid (g)

w4= weight of pycnometer and test item (g)

w5= weight of pycnometer, test item and displacement liquid (g)

W1 = Mass of water to fill pycnometer

W2 = Mass of displacement liquid to fill pycnometer

W3 = Mass of test item added to pycnometer

W4 = Mass of displacement liquid required to fill pycnometer containing W3g of test item

W5 = Mass of displacement liquid equivalent to W3g of test item

ptl= density of displacement liquid at temperature of determination (g/mL)

Dt4= relative density of test item at test temperature compared to water at 4°C

Conclusions:
The relative density of the test item was determined to be 1.03 at 20 °C.
Executive summary:

The relative density of the test item was determined in a study following OECD 109 and EC Method A.3 guidelines, using the pycnometer method. The relative density of the test item was determined to be 1.03 at 20 °C.

The study is a GLP compliant, guideline experimental study and is fully acceptable for assessment of this endpoint.

Description of key information

The relative density of the test item was determined to be 1.03 at 20 °C.

Key value for chemical safety assessment

Relative density at 20C:
1.03

Additional information

The relative density of the test item was determined in a study following OECD 109 and EC Method A.3 guidelines, using the pycnometer method (Dunning 2018).

The study is a GLP compliant, guideline experimental study and is fully acceptable for assessment of this endpoint.