Registration Dossier

Diss Factsheets

Ecotoxicological information

Long-term toxicity to aquatic invertebrates

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

No long-term toxicity studies of toxicity to aquatic invertebrates are available for magnesium carbonate and further testing is scientifically unjustified.

Key value for chemical safety assessment

Additional information

Magnesium is present in all natural waters and is a major contributor to water hardness. Water from areas rich in magnesium-containing rocks may contain magnesium in the concentration range 10 to 50 mg/L. The sulfates and chlorides of magnesium are very soluble, and water in contact with such deposits may contain several hundred milligrams of magnesium per litre. This natural abundance of magnesium ions in the environment means that aquatic organisms including invertebrates are constantly exposed to magnesium without suffering from any adverse or detrimental effects. Long-term toxicity testing of magnesium carbonate on aquatic invertebrates is therefore scientifically unjustified.