Registration Dossier
Registration Dossier
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: 209-942-9 | CAS number: 598-62-9
- 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

Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
No toxic effects up to the limit of solubility of the test substance in the test medium, OECD 203, EU Method C.1, Priestly & Mullee (2010). Study conducted with MnO.
Key value for chemical safety assessment
Additional information
A study was performed to assess the acute toxicity of the test substance to rainbow trout (Oncorhynchus mykiss). The method followed that described in the OECD Guidelines for Testing of Chemicals (1992) No 203, "Fish, Acute Toxicity Test" referenced as Method C.1 of Commission Regulation (EC) No. 440/2008.
Pre-study solubility work conducted indicated that it was not possible to obtain a testable solution of the test substance using traditional methods of preparation e.g. ultrasonication and high shear mixing. It was considered that the most appropriate method of preparation for the test substance was as a saturated solution.
Following a preliminary range-finding test fish were exposed, in two groups of seven, to an aqueous solution of the test substance, at a single concentration of 100% v/v saturated solution for a period of 96 hours at a temperature of 12 ºC to 15 °C under semi-static test conditions. The test substance solution was prepared by stirring an excess (100 mg/L) of test substance in dechlorinated tap water using a magnetic stirrer at approximately 100 rpm at a temperature of approximately 14 °C for 48 hours. After the stirring period any undissolved test substance was removed by filtration to give a saturated solution of the test substance. The number of mortalities and any sub-lethal effects of exposure in each test and control vessel were determined 3 and 6 hours after the start of exposure and then daily throughout the test until termination after 96 hours.
There were no mortalities or sub-lethal effects over the 96 hour test period. The 96-hour LC50 value was therefore considered to be greater than 100% v/v saturated solution.
Therefore, under the conditions of the study there were no toxic effects up to the limit of solubility of the test material in the test medium.
Since the study was conducted with manganese oxide, rather than with the registered substance itself, it was assigned a relibality score of 2 according to the criteria of Klimisch (1997).
Use of data on MnO to address data requirements of MnCO3 is considered to be justified on the basis that analogous results were obtained following chronic daphnia, and algae, testing with both substances, both substances display similar TDp results suggesting similar levels of metal release in environmentally relevant waters, and manganese is in the same oxidation state in both substance; furthermore, the anions are not expected to cause aquatic toxicity.
Overall, findings from the fish study with MnO, indicating there are no toxic effects elicited by Mn at the limit of solubility, support the conclusion that the substance is not hazardous to the aquatic environment.
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.
