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EC number: 231-104-6 | CAS number: 7439-95-4
- 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
No data are available for the toxicity of Mg metal to aquatic organisms and read-across is made to soluble Mg salts (MgCl2 and MgSO4 + their hydrated forms). All data were reported based on added elemental Mg concentrations. The table below gives an overview of the reliable toxicity data selected for hazard assessment of magnesium.
Trophic level | Species | Parameter | Endpoint | Value (mg Mg/L) | Reference |
Acute toxicity, freshwater | |||||
Fish | Pimephales promelas | mortality | 96-h LC50 | 541 | Mount et al., 1997 |
Invertebrates | Daphnia magna | mortality | 48-h LC50 | 140 | Biesinger and Christensen, 1972 |
Algae | Scenedesmus subspicatus | growth rate/biomass | 72-h EC50 | >12 | Dengler, 2010a |
Acute toxicity, marine water | |||||
Fish | Menidia beryllina | mortality | 48-h LC50 | 2800 | Pillard et al., 2000 |
Invertebrates | Americamysis bahia | mortality | 48-h LC50 | 2650 | Pillard et al., 2000 |
Chronic toxicity, freshwater | |||||
Invertebrates | Daphnia magna | reproduction | 21 -d NOEC | 41 | Biesinger and Christensen, 1972 |
Algae | Scendesmus subspicatus | growth rate/biomass | 72-h NOEC | ≥12 | Dengler, 2010a |
Reliable short-term toxicity data for freshwater organisms are available for three trophic levels: aquatic invertebrates, fish and algae. The lowest acute effect value was a 48-h LC50 of 140 mg Mg/L observed for the effect of MgCl2.6H2O on mortality of Daphnia magna. Acute toxicity data are also available for marine fish and invertebrates, with 48-h LC50 values of 2800 and 2650 mg Mg/L, respectively. Reliable long-term toxicity data for freshwater organisms are only available for aquatic invertebrates (Klimisch 2 study by Biesinger and Christensen, 1972) and algae (Klimisch 1 study by Degler, 2010a). The unbounded NOEC value for algae was however not taken into account for the PNEC derivation due to its high degree of uncertainty. No reliable studies are available for chronic toxicity of Mg to freshwater fish or higher plants or to marine organisms.
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