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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:
From 5 September 2012 to 13 March 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
2.086 other: dimensionless
Temp.:
24.4 °C

Assay No. 1

Four runs were performed; test item weight: 75.4372 g. The results of run 1 are not reported as they did not comply with the quality criterion. Results of the remaining three runs are 2.0885, 2.0878 and 2.0888 g/cm³, with a calculated mean density of 2.088 g/cm³.

Temperature during the assay: 24.6°C.

Assay No. 2

Four runs were performed; test item weight: 79.4195 g. The results of run 1 are not reported as they did not comply with the quality criterion. Results of the remaining three runs are 2.0824, 2.0849 and 2.0853 g/cm³, with a calculated mean density of 2.084 g/cm³.

Temperature during the assay: 24.2°C.

Conclusions:
The relative density of the test item using the gas comparison method with the stereopycnometer was 2.086.

Description of key information

The relative density of yttrium trinitrate was determined to be 2.086 ± 0.002 at 24.4°C in a GLP test performed according to EC method A.3, following the gas comparison pycnometer method (Demangel, 2013; Klimisch 1).

Key value for chemical safety assessment

Relative density at 20C:
2.086

Additional information

Although the test was not performed at 20°C, the relatively small temperature difference is not considered to influence the density of a solid material to a significant extent.