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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:
2002-07-03
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
GLP compliance:
yes
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.077 other: unitless
Temp.:
20 °C

An analytical balance was used for the mass determination of the empty pycnometer and the pycnometer with the test item

 

 

First Pycnometer

Second Pycnometer

Mass of pycnometer (empty) [g]

23.4486

24.5308

Mass of pycnometer + test item [g]

55.6837

56.7741

Mass of test item [g]1

32.2351

32.2433

Volume of pycnometer [cm3]2

29.9260

29.9497

Density [g/cm3]3

1.0772

1.0766

Mean value of Density [g/cm3]

1.0769

  1. Calculated from the masses
  2. Known from calibration
  3. Calculated from the mass of the test item and volume of the pycnometre

The relative density D420 is: 1.0769 g/cm3/ 0.9997 g/cm3 = 1.0769

(0.9997 g/cm3 as density of water at 4°C)

Conclusions:
A relative density value of 1.0769 at 20°C has been determined for the substance using an appropriate method and in compliance with GLP. The result is considered to be reliable.

Description of key information

Relative density: 1.0769 at 20°C (OECD 109)

Key value for chemical safety assessment

Relative density at 20C:
1.077

Additional information

A measured relative density value of 1.0769 at 20°C was determined for the substance using a pycnometer method in accordance with OECD Test Guideline 109 and in compliance with GLP. The result is considered to be reliable and is selected to be as the key study. The key study is supported by another measured relative density value of 1.075 at 20°C using an oscillating densitimeter in accordance with OECD Test Guideline 109 and in compliance with known quality system (ISO 9001:2008).

In addition, a predicted density value of 1.16 g/cm3 at 20°C was determined for the substance using a validated QSAR estimation method.

In available secondary sources to which no reliability could be assigned, density values of 1.0 and 1.07 g/cm3 were reported for the substance.