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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:
30 June 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
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:
3.408
Temp.:
20.2 °C
Remarks on result:
other: Mean value of two assays (assay No.1: 3.412, assay No.2: 3.404)

Two independent measurements at 19.9°C (assay No. 1) and 20.4°C (assay No. 2) were done. Runs 1, 2, 3, 4 and 5 of assay No. 1 and run 1 of assay No. 2 were not taken into account because they did not comply with the quality criteria.

The two assays resulted in mean relative densities of 3.412 ± 0.002 and 3.404 ± 0.002, respectively. The mean relative density of the two assays was thus 3.408 ± 0.005 at 20.2°C. The measured data are described in the tables found in the next section.

Conclusions:
The relative density of tungsten zirconium hydroxide oxide was determined to be 3.408 ± 0.005 at 20.2°C.

Description of key information

Based on the guideline study (Klimisch 1, Demangel, 2017) the mean relative density of tungsten zirconium hydroxide oxide is 3.408 ± 0.005 at 20.2°C.

Key value for chemical safety assessment

Relative density at 20C:
3.408

Additional information