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Diss Factsheets

Physical & Chemical properties

Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
13 September 2001
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Deviations:
no
GLP compliance:
yes
Type of method:
pycnometer method
Specific details on test material used for the study:
Purity: 99.5%
Key result
Type:
relative density
Density:
1.76
Temp.:
20 °C

Table 1: Summary of Results

Sample

Density relative to water at 20 °C

Average

1

1.82

1.76

2

1.69
Conclusions:
The relative density of the test material was determined to be 1.76 at 20 °C, average from two determinations.
Executive summary:

The density of the test material was investigated in a study which was conducted under GLP conditions and in accordance with the standardised guideline EPA OPPTS 830.7300 using a pynometer.

Under the conditions of the study, the density of the test material relative to water at 20 °C was determined to be 1.76, average from two determinations.

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
19 March 2001 to 20 March 2001
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Deviations:
no
GLP compliance:
yes
Type of method:
pycnometer method
Specific details on test material used for the study:
Purity: 94.5%
Key result
Type:
relative density
Density:
1.72
Temp.:
20 °C

Table 1: Summary of Results

Sample

Density relative to water at 20 °C

Average

1

1.65

1.72

2

1.78
Conclusions:
The relative density of the test material was determined to be 1.72 at 20 °C, average of two determinations.
Executive summary:

The density of the test material was investigated in a study which was conducted under GLP conditions and in accordance with the standardised guideline EPA OPPTS 830.7300 using a pynometer.

Under the conditions of the study, the density of the test material relative to water at 20 °C was determined to be 1.72, average of two determinations.

Description of key information

Relative density = 1.76, EPA OPPTS 830.7300, Russell (2001)
Relative density = 1.72, EPA OPPTS 830.7300, Russell (2003)

Key value for chemical safety assessment

Relative density at 20C:
1.76

Additional information

Two studies investigating the relative density of the test material are available. Both studies were conducted under GLP conditions and in accordance with the standardised guideline EPA OPPTS 830.7300 using a pycnometer. Both studies were assigned a reliability score of 1 in line with the criteria of Klimisch et al. (1997).

Under the conditions of the first study, reported by Russell (2001) the density of the test material relative to water at 20 °C was determined to be 1.76, average from two determinations.

Under the conditions of the second study, reported by Russell (2003) the density of the test material relative to water at 20 °C was determined to be 1.72, average of two determinations.

Since the purity of test material in the 2001 study was 99.5 %, as opposed to 94.5 % in the 2003 study, the former is regarded as key, though both results are in good agreement.