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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:
25 January 2001 - 29 January 2001
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Study conducted in compliance with agreed protocols, with no or minor deviations from the standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and conducted under GLP conditions.
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Deviations:
no
Qualifier:
equivalent or similar 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:
1.88 g/cm³
Temp.:
20 °C

Table 1: Relative Density (compared to water at 20.0 °C)

Determination

Density

Average

1

1.83

1.88

2

2.06

3

1.75

4

1.91
Conclusions:
Under the conditions of the test, the relative density of the test material was determined to be 1.88.
Executive summary:

The relative density of the test material was determined in a GLP study conducted according to the standardised guideline EPA OPPTS 830.7300 using the pycnometer method.

The pycnometer was then completely filled with solvent and the lid placed on top. The pycnometer was allowed to equilibrate in a 20 °C water-bath for 20 minutes before weighing the solvent filled pycnometer containing the sample aliquot. The procedure was repeated and the relative density was calculated. As there was a significant difference (-12 %) between the first two determinations the above procedure was repeated with a different pycnometer. The average of the third and fourth determination confirmed the original results and the average of all four determinations was reported.

Under the conditions of the test, the relative density of the test material was determined to be 1.88.

Description of key information

Relative density 1.88, pycnometer method, EPA OPPTS 830.7300, Russell 2001.

Key value for chemical safety assessment

Relative density at 20C:
1.88

Additional information

The relative density of the test material was determined in a GLP study conducted according to the standardised guideline EPA OPPTS 830.7300 using the pycnometer method. The study was assigned a reliability score of 1, reliable without restrictions, in line with the principles of Klimisch et al. (1997).

The pycnometer was then completely filled with solvent and the lid placed on top. The pycnometer was allowed to equilibrate in a 20 °C water-bath for 20 minutes before weighing the solvent filled pycnometer containing the sample aliquot. The procedure was repeated and the relative density was calculated. As there was a significant difference (-12 %) between the first two determinations the above procedure was repeated with a different pycnometer. The average of the third and fourth determination confirmed the original results and the average of all four determinations was reported.

Under the conditions of the test, the relative density of the test material was determined to be 1.88.