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EC number: 254-671-1 | CAS number: 39881-32-8
- 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
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Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The test substance dibutylmagnesium was examined in a acute growth inhibition test for alga according OECD Guideline 201.The growth inhibitory ratio of Chlorella sp. indicated that the EC50 (72h) was greater than highest tested nominal concentration of 100 mg/L. Highest nominal concentration is equivalent to analytical meassured 47.19 mg/L.
Key value for chemical safety assessment
Additional information
This study was conducted to assess the acute toxicity of Dibutylmagnesium on single cell algae by observing acute inhibitory effects. The grow was observed and recorded at 24 h, 48 h and 72 h. Based on the results of preliminary test, the growth inhibitory ratio in solutions with 100 mg/L Dibutylmagnesium was 0.96% and below 50%, it was not necessary to conduct the definitive test.
Atomic absorption spectrometry of test solutions was used to generate standard curve to read substance concentration directly at the beginning and the end of test (c(48h)/c(0h) = 89.6%).
However, limit test with 3 replicates was carried out. The growth inhibitory ratio was -0.64% and indicated that the EC50 (72h) was greater than 100 mg/L, which is equivalent to measured 47.19 mg/L. Potassium dichromate was used as positive control. The calculated EC50 (72h) = 0.88 mg/L is in accordance with the accepted range of Guideline.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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