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EC number: 215-268-6 | CAS number: 1317-37-9
- 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
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- Guideline compliant study with good documentation
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Type of method:
- flask method
- Key result
- Water solubility:
- < 0.87 µg/L
- Incubation duration:
- 3 d
- Temp.:
- 20 °C
- pH:
- >= 5.6 - <= 5.9
- Conclusions:
- Interpretation of results: insoluble (< 0.1 mg/L)
measured water solubility < 0.87 µg/L - Executive summary:
In the GLP Klimisch 1 key study from Anipol the water solubility of iron(II) sulfide was determined according to OECD 105. During the 3 days stirring period, the measeured concentrations were always below the LOD of 0.550 µg Fe/L corresponding to 0.866 µg FeS/L. Hence, the water solubility of iron sulfide is < 0.87 µg/L.
For the risk assessment, a water solubility of 0.87 µg FeS will be used.
The results of this study are considered relevant and reliable for the risk assessment.
Reference
Description of key information
0.87 µg/L
Key value for chemical safety assessment
- Water solubility:
- 0.87 µg/L
- at the temperature of:
- 20 °C
Additional information
For the water solubility, two studies are available: One GLP Klimisch 1 study and a Klimisch 3 study.
In the GLP Klimisch 1 key study from Aniol the water solubility of iron(II) sulfide was determined according to OECD 105. During the 3 days stirring period, the measeured concentrations were always below the LOD of 0.550 µg Fe/L corresponding to 0.866 µg FeS/L. Hence, the water solubility of iron sulfide is < 0.87 µg/L. For the risk assessment, a water solubility of 0.87 µg FeS will be used. The results of this study are considered relevant and reliable for the risk assessment.
For the determination of the water solubility of iron sulfide one Klimisch 3 key study is available (Paß 2011). This study was performed following OECD 105 and EU A.6 guidelines with the shake flask method. The deviations to the guidelines, e.g. set-up of two instead of three replicates and no determination of the pH, were minor and hence considered to have no impact on the outcome of the study. The major deviation to the test guideline was the concentration of the starting suspension. This starting suspension was prepared with a concentration of 25g/L and hence orders of magnitude higher than the expected (and later measured) water solubility. This is in deviation to the guideline which forsees a pretest and weighing in about 5 times more material than the final water solubility. When too high amounts are used to start the test, impurities might affect the water solubility. Hence, this deviation might have had a signigficant impact on the sulfur concentration in the test solutions since non-FeS sulfur might have been present and measured in the suspension as well. The water solubility of FeS at 20 °C was determined to be 2.1 *10-2g/l (=21 mg/L) with a standard deviation of 0.0013 g/L (= 1.3 mg/L). Based on the applied method and the expected impact of the potentially excess sulfur in the test solutions caused by the extremly high initial amounts used to prepare the aqueous suspensions, this result is considered of minor relevance for the risk assessment.
For the risk assessment the result from the Klimisch 1 study from Aniol (2012) will be used. i.e., 0.87 µg FeS/L.
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