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Diss Factsheets
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EC number: 948-231-4 | 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
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Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- transformation / dissolution of metals and inorganic metal compounds
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 10-21/12/2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Series on Testing and Assessment No. 29 (23-Jul-2001): Guidance document on transformation/dissolution of metals and metal compounds in aqueous media
- Version / remarks:
- To assess the solubility of the test item water, we opted for slightly acidic concentration because the metals of concern are rather soluble at lower pH than at higher pH.
- GLP compliance:
- yes
- Type of method:
- flask method
- Key result
- Type of test:
- screening transformation/dissolution test - sparingly soluble metal compounds
- Mean dissolved conc.:
- < 0.002 mg/L
- Element analysed:
- iron
- Loading of aqueous phase:
- 100 mg/L
- Incubation duration:
- 24 h
- Test conditions:
- at pH 6
- Key result
- Type of test:
- screening transformation/dissolution test - sparingly soluble metal compounds
- Mean dissolved conc.:
- ca. 4.88 mg/L
- Element analysed:
- germanium
- Loading of aqueous phase:
- 100 mg/L
- Incubation duration:
- 24 h
- Test conditions:
- at nominal pH 6
- Remarks on result:
- other: standard deviation: 0.16 mg/L
- Key result
- Type of test:
- screening transformation/dissolution test - sparingly soluble metal compounds
- Mean dissolved conc.:
- ca. 0.84 mg/L
- Element analysed:
- silicon
- Loading of aqueous phase:
- 100 mg/L
- Incubation duration:
- 24 h
- Test conditions:
- at nominal pH 6
- Remarks on result:
- other: standard deviation: 0.03 mg/L
- Details on results:
- Based on the element contents in the test item and the average dissolved element concentrations in the test solutions:
• a release of <0.0094 % of iron content (i.e. 21.2 % Fe),
• a release of 58 % of germanium content (i.e. 8.41 % Ge),
• a release of 10 % of silicon content (i.e. 8.02 % Si),
could be calculated at the 24 hours endpoint in test medium at pH 6. - Conclusions:
- During this study on FUMFL at a loading of 100 mg/L, it was shown that:
• For iron an average concentration of <0.002 mg/L Fe was measured at pH 6 (i.e. <0.0094 % iron release),
• For germanium, an average concentration of 4.88 mg/L Ge (CVoverall = 3 %; N = 9) was measured at pH 6 (i.e. 58 % germanium release),
• For silicon, an average concentration of 0.84 mg/L Si (CVoverall = 3 %; N = 9) was measured at pH 6 (i.e. 10 % silicon release),
after 24 hours of exposure to the test medium at pH 6.
The results can be assumed reliable since the test conditions stayed constant during the experiment. - Executive summary:
The objective of this study was to obtain information about the dissolution characteristics of FUMFL. The pH-dependent extent of dissolution of FUMFL was tested in standard aqueous solutions at pH 6 (0.5 % CO2-buffering) for 24 hours at an agitation speed of 100 revolutions per minute (rpm). The extent of the transformation/dissolution was measured as the dissolved iron, germanium and silicon concentrations obtained after 24 hours. This study has been performed according to OECD Test Guidance No.29, as laid down in the Study Plan and performed according to the SOPs as established by ECTX.
The test medium at the start of the test and the blank control vessels during the test showed concentrations below the limits of detection of 2 μg/L Fe, 0.04 μg/L Ge and 0.03 mg/L Si. The limits of detection were determined as the rounded up values of three times the standard deviation of each element of all blank measurements in this study at pH 6. For the test at nominal pH 6at a loading of 100 mg/L FUMFL, average dissolved concentrations of:
- <0.002 mg/L iron,
- 4.88 ± 0.16 mg/L germanium (CVoverall= 3 %; N = 9),
- 0.84 ± 0.03 mg/L silicon (CVoverall= 3 %; N = 9),
were found at the 24 hours endpoint.
Based on the element contents in the test item and the average dissolved element concentrations in the test solutions:
- a release of <0.0094 % of iron content (i.e. 21.2 % Fe),
- a release of 58 % of germanium content (i.e. 8.41 % Ge),
- a release of 10 % of silicon content (i.e. 8.02 % Si),
could be calculated at the 24 hours endpoint in test medium at pH 6.
Reference
Description of key information
During this study on FUMFL at a loading of 100 mg/L, it was shown that:
• For iron an average concentration of <0.002 mg/L Fe was measured at pH 6 (i.e. <0.0094 % iron release),
• For germanium, an average concentration of 4.88 mg/L Ge (CVoverall = 3 %; N = 9) was measured at pH 6 (i.e. 58 % germanium release),
• For silicon, an average concentration of 0.84 mg/L Si (CVoverall = 3 %; N = 9) was measured at pH 6 (i.e. 10 % silicon release),
after 24 hours of exposure to the test medium at pH 6.
Key value for chemical safety assessment
Additional information
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.
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