Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 947-961-0 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 02 November 2017 - 12 April 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- column elution method
Test material
- Reference substance name:
- ytterbia stabilised yttrium disilicate
- Molecular formula:
- Yb2-xYxSi2O7
- IUPAC Name:
- ytterbia stabilised yttrium disilicate
- Test material form:
- solid: particulate/powder
- Details on test material:
- Name: ytterbium doped yttrium disilicate
Physical state: solid
Appearance: white powder
Further information on test material confidential.
Constituent 1
Results and discussion
Water solubilityopen allclose all
- Key result
- Water solubility:
- 0.9 mg/L
- Conc. based on:
- element (dissolved fraction)
- Remarks:
- yttrium
- Temp.:
- 20 °C
- pH:
- 6
- Remarks on result:
- other: Expressed as yttrium content in water; mean of flow rates 12.5 mL/h and 6.25 mL/h.
- Key result
- Water solubility:
- 0.05 mg/L
- Conc. based on:
- element (dissolved fraction)
- Remarks:
- ytterbium
- Temp.:
- 20 °C
- pH:
- 6
- Remarks on result:
- other: Expressed as ytterbium content in water; mean of flow rates 12.5 mL/h and 6.25 mL/h.
- Details on results:
- Yttrium:
Results were validated by:
- Linearity validation: The analysis showed a good linearity of the method (r > 0.99).
- Accuracy validation: Results in dilution mixture showed a good accuracy which indicates acceptable data (recoveries ranged between 70 and 110%).
- Repeatability validation: The results indicated a good precision of the data (RSD < 20%).
- Specificity: The intensity (CPS) of blank samples measured was negligible.
- Limit of quantification: 0.1 mg Y/L
- Limit of detection: 0.02 mg Y/L
Ytterbium:
Results were validated by:
- Linearity validation: The analysis showed a good linearity of the method (r > 0.99).
- Accuracy validation: Results in dilution mixture showed a good accuracy which indicates acceptable data (recoveries ranged between 70 and 110%).
- Repeatability validation: The results indicated a good precision of the data (RSD < 20%).
- Specificity: The intensity (CPS) of blank samples measured was negligible.
- Limit of quantification: 0.03 mg Yb/L
- Limit of detection: 0.01 mg Yb/L
Any other information on results incl. tables
Results of the preliminary test with milliQ water and at pH 6 were:
Amount of test item weighed (g) | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.01 |
Volume of water added (mL) | 0.1 | 0.5 | 1 | 2 | 10 | 100 | 1000 |
Solubility (yes/no) | No | No | No | No | No | No | No (after > 96 h of agitation of the test solution) |
Results of the main test
|
Solubility expressed as Yttrium content in water (mg/L) |
Solubility expressed as Ytterbium content in water (mg/L) |
Mean pH measured |
Temperature (°C) |
Test 0 (flow 25 mL/h) |
Mean 0.2 mg/L - not stable |
Mean 0.01 mg/L - not stable |
6 |
20 |
Test 1 (flow 12.5 mL/h) |
0.9 | 0.03 | 6 | 20 |
Test 2 (flow 12.5 mL/h) |
0.8 | 0.04 | 6 | 20 |
Mean (Test 1 and Test 2) |
0.9 |
0.04 |
6 |
20 |
Test 3 (flow 6.25 mL/h) |
0.8 | 0.05 | 6 | 20 |
Mean (12.5 mL/h and 6.25 mL/h) |
0.9 | 0.05 | 6 | 20 |
Applicant's summary and conclusion
- Conclusions:
- During the water solubility test with ytterbium doped yttrium disilicate, performed according to the column elution method, the water solubility of yttrium from the test substance was determined to be 0.9 mg Y/L, and that of ytterbium was determined to be 0.05 mg Yb/L. The test was performed at 20°C and the average pH measured during the test was 6.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.