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EC number: 292-951-5 | CAS number: 91031-48-0
- 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
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
No effects on toxicity to aquatic algae up to the limit of water solubility.
Key value for chemical safety assessment
Additional information
In general, all EC/EL50(72h) values derived with dififerent algae species for various test substances in the SCAE C2 -C8 category were above the limit of water solubility. Physical effects caused by the test substance were described in presence of undissolved test material.
The effects of Fatty acids, C16-18, 2-ethylhexyl esters to the freshwater algae Scenedesmus subspicatus were investigated according to DIN 38412 (Kläs 1994). Nominal concentrations of 30, 100 and 300 mg/L without removal of insoluble particles were tested and yielded an EC50(96 h) of 300 mg/L and a NOEC(96 h) of 30 mg/L, both based on biomass. It can be assumed that the undissolved particles inhibited the algal growth due to physical effects and not to systemic toxicity.
To substantiate these findings, a further key study as read-across from 2-ethylhexyl oleate (CAS 26399-02-0) to the freshwater algae Scenedesmus subspicatus was taken into account (Rieche 1995). The test was performed according to EU-Method C.3 with filtered and unfiltered solution of 100 mg/L. The filtered solution showed no significant inhibition of algae growth or growth rate which means that the water soluble part of the test substance turned out not to be toxic. With a more or less homogenous emulsion of test material high inhibitions of algae growth and growth rate were observed (75.7% and 42.6% respectively). This observed inhibition in presence of undissolved test substance can be accounted to physical, but not biological influences and a ErC50(72h) of > 100 mg/L could be stated.
As supporting study, a read across from Fatty acids, C16-18 and C18-unsatd., 2-ethylhexyl esters (CAS: 85049-37-2) was used. In this test, the marine algae Skeletonema costatum was tested according to ISO 10253 (WAF-test). The resulting ErL50(72h) was determined as 281.4 mg/L (nominal loading rate, Hudson 2000).
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