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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:
2004-09-23
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
December 1992
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
July 27 1995
Deviations:
no
GLP compliance:
yes
Type of method:
oscillating densitimeter
Key result
Type:
relative density
Density:
0.993 other: unitless
Temp.:
20 °C

As the density of the test item was determined at 20°C, the relative density is stated.

First, the apparatus was tested by determination of the density of air and water at 20°C. The results for water are given in Table 1. These values are in the accepted range of 0.9982 ± 0.0003 g/cm3.

Table 2 shows the individual measurements for the density of the test item. From these, the mean value was calculated, corrected for the relative density and given in the same table. the tabulated values represent rounded results obtained from calculation using the exact raw data.

Table 1: Results of the calibration using Air and Water

The density of air was measured to be 0.0012 g/cm3.

Test No.

Temperature [°C]

Density of water [g/cm3]

Measured

Mean value

Theoretical value

1

20.0

0.9982

0.9982

0.9982

2

20.0

0.9982

3

20.0

0.9982

Table 2: Determination of the density of the test item

 

Test No.

Temperature [°C]

Density of test item [g/cm3]

Measured

Mean value

Theoretical value

1

20.0

0.9929

0.9929

0.9929

2

20.0

0.9929

 

Calculation of the relative density

D204 = 0.9929/0.99997 = 0.9929

Conclusions:
A relative density value of 0.9929 at 20°C was determined for the substance using a relevant test method and in compliance with GLP. The result is considered to be reliable.

Description of key information

Relative density: 0.9929 at 20°C (OECD 109)

Key value for chemical safety assessment

Relative density at 20C:
0.993

Additional information

A relative density value of 0.9929 at 20°C was determined for the submission substance using an oscillating densitimeter in accordance with OECD Test Guideline 109 and in compliance with GLP. The result is considered to be reliable.