Registration Dossier
Registration Dossier
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EC number: 219-323-5 | CAS number: 2414-98-4
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Magnesium ethanolate hydrolyses rapidly in contact with moisture or water (t1/2<1 minute) into ethanol and magnesium hydroxide (detailed description in section 5.1.2). Valid toxicity data for microorganisms are available for the hydrolysis products ethanol and magnesium hydroxide and magnesium ethanolate can be evaluated with respect to toxicity to microorganisms.
Both hydrolysis products are natural occurring substances and according to the available data are not dangerous for aquatic organisms and no classification is required.
Hydrolysis product magnesium hydroxide:
According to the key study, Magnesium hydroxide was not toxic to waste water (activated sludge) bacteria at a loading rate of 100 mg/l. The 3-hour EC50 of magnesium hydroxide exceeded a loading rate of 100 mg/l.In the supporting study, acute tests showed magnesium sulfate to be the least toxic substance of the six salt solutions tested.
According to the available data, the hydrolysis product magnesium hydroxide can be considered as not harmful to microorganisms.
Hydrolysis product ethanol
A large amount of data on the toxicity of ethanol is available for a broad spectrum of aquatic organisms. The results from the most reliable and relevant available studies to toxicity to micoorganisms showed EC50 values above 10000 mg/l and the hydrolysis product ethanol can be considered as not harmful to microorganisms.
Key value for chemical safety assessment
Additional information
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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