Registration Dossier
Registration Dossier
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EC number: 233-794-4 | CAS number: 10361-79-2
Density
Administrative data
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 08 June 2017 - 02 November 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- pycnometer method
Test material
- Reference substance name:
- trichloropraseodymium; heptahydrate
- Cas Number:
- 10025-90-8
- Molecular formula:
- PrCl3.7H2O
- IUPAC Name:
- trichloropraseodymium; heptahydrate
- Test material form:
- solid: particulate/powder
- Details on test material:
- - Name of the test material (as in the report): praseodymium trichloride heptahydrate
- Physical state: solid
- Appearance: green crystalline powder
- Further information on test material confidential.
Constituent 1
Results and discussion
Density
- Key result
- Type:
- relative density
- Density:
- ca. 2.233
- Temp.:
- 19.6 °C
- Remarks on result:
- other: Mean value of two assays (assay No.1: 2.242 ± 0.002 , assay No.2: 2.224 ± 0.001).
Any other information on results incl. tables
Two independent measurements at 19.2°C (assay No. 1) and 20°C (assay No. 2) were done. Run 1 of assay No. 1 and runs 1, 2, 3, 4 and 5 of assay No. 2 were not taken into account because they did not comply with the quality criterion. A longer stabilisation time of the pressure was needed to obtain three consequent runs complying with the quality criterion.
The two assays resulted in relative densities of 2.242 ± 0.002 and 2.224 ± 0.001, respectively. The mean relative density was thus 2.233 ± 0.010 at 19.6°C.
Reference volume (Va) was 79.444 cm³.
Volume of sample cell holder (Vc) was 27.678 cm³.
Test item sample weight was 7.5900 g and 8.0786 g in assay No. 1 and 2, respectively.
The measurements are described in the table in the next section.
Applicant's summary and conclusion
- Conclusions:
- The relative density of praseodymium trichloride heptahydrate was determined according to EU A.3 method and OECD test guideline 109 in compliance with GLP using a gas comparison pycnometer. The relative density of the test item was determined to be 2.233 ± 0.010 at 19.6°C.
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