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Diss Factsheets
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EC number: 242-599-3 | CAS number: 18820-29-6
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
ENVIRONMENTAL FATE PROPERTIES
Summary of degradation
MnS is inorganic and hence the ready biodegradation and hydrolysis tests are not relevant. This is because there is no carbon to be evolved and no chemical bonds to be broken, respectively. The water solubility of MnS is 6.16 mg/l at 20°C and a transformation dissolution study has shown that the concentration of manganese dissolved and/or transformed is 18181.8 µg/l after 7 days from 100mg/L loading (i.e. around 3 times higher than the water solubility). Not surprisingly these values are in excess of the background concentration of manganese in European environments (15.9 µg Mn/L in surface water, 452 mg/kg in sediment, 428.6 mg/kg in soil; “Probabilistic Distribution of Manganese in European Surface Water, Sediment and Soil and Derivation of Predicted Environmental Concentrations (PEC)”, Parametrix, 2009 and supported by GEMAS data).
Volatilisation
Data on volatilisation are not available for the substance. MnS is a solid and hence not volatile.
Distribution modelling
No distribution modelling data exist.
Summary of environmental distribution
An adsorption / desorption study on Manganese (2+) has been conducted in 35 soils following the OECD sorption guideline. Data for 100 day incubations show that, as expected, the sorption is pH sensitive. A median Kd value of 650 ml/g has been determined for all soils (pH range 3.0-8.5).
Summary and discussion of bioaccumulation
The bioaccumulation study on MnS is waived on the basis that considerable existing data is already available which establishes the following points:
1) Manganese is an essential element and nutrient for animals and as such is regulated by organisms depending on their biological burden and requirement.
2) Bioaccumulation testing is poorly applicable to essential metals because of the homeostatic regulation of essential metals.
3) Existing data demonstrates that whilst manganese can bioaccumulate, at lower trophic levels biomagnification up the food chain is weak or does not occur.
4) Whilst there is a significant volume of published literature on the bioaccumulation of manganese that may be used to determine the bioconcentration and bioaccumulation factors these data are largely based on soluble manganese salts, as opposed to the registered substance. MnS has relatively low water solubility and bioavailability, as shown in the transformation dissolution data included in this dataset. Data on the more soluble salts commonly referenced in existing literature are likely to over-estimate the bioaccumulation potential of MnS.
Additional supporting data is included as robust study summaries; namely papers by Prabhu (2019, Simonetti (2018), Ikemoto (2008a) and Campbell (2005).
Secondary poisoning
Bioaccumulation of MnS is not expected to occur. Hence no secondary poisoning risk exists.
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.
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