Registration Dossier
Registration Dossier
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EC number: 825-760-8 | CAS number: 39290-95-4
Density
Administrative data
Link to relevant study record(s)
- 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
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- 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)
- Conclusions:
- The relative density of tungsten zirconium hydroxide oxide was determined to be 3.408 ± 0.005 at 20.2°C.
Reference
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.
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
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