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EC number: 211-334-3
CAS number: 638-38-0
general, Manganese (II) acetate is not released into the environment due
to the strictly controlled conditions during manufacture, transportation
and use. Consequently, not hazard for aquatic and sediment organisms,
microorganisms, avian and terrestrial organisms is expected.
the hazard for air, the low vapour pressure, high decomposition
temperature, high particle size and the fact that Manganese (II) acetate
does not belong to neither ozone-depleting substances nor green house
gases, Mn(acO)2 would also pose not harm in case of accidental release.
the Koc did not need to be determined due to exposure considerations,
the PNEC sediment cannot be calculated according to ECHAs “Guidance on
information requirements and chemical safety assessment, Chapter R.10:
Characterisation of dose [concentration]-response for environment”,
chapter 10.5.2, equation R.10-2 (2008). However, since this formula only
considers uptake via the water phase, the equation is based on the
assumption that sediment-dwelling organisms and water column organisms
are equally sensitive to the chemical, and Manganese (II) acetate as an inorganic
salt has a very low LogPow and high water solubility, the PNECs sediment
can assumed to be equal to the PNECs water. Since Plectonema boryanum is
the most sensitive aquatic species, the PNECs water are therefore
calculated from these results, and the sensitivity of all other species
is up to three magnitudes lower, it can be assumed that the actual risk
would be overestimated.
no release of the compound is expected, the PNECs water are extrapolated
out of completeness reasons applying the standard assessment factors as
described in ECHAs Guidance R.10, based on the results of the most
sensitive species, Plectonema boryanum, to 0.0345 mg/L, 0.00345 mg/L and
0.345 mg/L (PNEC aqua freshwater, marine water and intermittent
the PNEC STP was calculated out of completeness reasons. Since the
testing for toxicity to microorganisms could be waived due to exposure
considerations, the PNEC could not be extrapolated from standard
endpoints. However, data on the ciliate Tetrahymena pyriformis is
available, and so the PNEC STP could be calculated according ECHAs
Guidance R.10 to 6.5 mg/L by applying assessment factors.
summary, all the given results from testing Manganese (II) acetate and
read-across substances on aquatic organisms, the calculated PNECs and
the strictly controlled conditions indicate that no or a negligible risk
arises from Manganese (II) acetate. Also, Manganese (II) acetate does
not need to be classified, neither according to Directive 67/548/EC
(DSD) nor Regulation 1272/2008/EC (CLP).
Based on aquatic toxicity test results
obtained, Manganese (II) acetate is not classified and labelled
according to Directive 67/548/EC (DSD) and Regulation 1272/2008/EC (CLP).
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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