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EC number: 217-978-1 | CAS number: 2028-63-9
- 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
The influence of the test substance on the growth of the freshwater algae Scenedesmus subspicatus (new name: Desmodesmus subspicatus) was assessed in a static dose response test according to DIN 38 412. Based on act. ingr. the 72h-ErC50 value was calculated to be 196.88 mg/L (extrapolated), and the associated 72h-ErC10 was determined to be 56.77 mg/L.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 196.88 mg/L
- EC10 or NOEC for freshwater algae:
- 56.77 mg/L
Additional information
The toxicity of the test substance was determined according to the principles of DIN 38412 Part L9. The aim of the study was to assess the effects on growth rate and yield over a period of 72 and 96 hours. The study was conducted under static conditions. This study encompassed 6 treatment groups (5 dose rates of the test item and control) with one replicate per test concentration and one replicate for the control. At test start 50 mL of the test concentrations were inoculated with 10000 algal cells per mL test medium and defined volumes of the algal suspensions were sampled after 0, 24, 48, 72 and 96 hours for determination of cell densities by spectrophotometrical measurement. No analytical determination of the concentrations of the test substance was done. The nominal test concentrations were 0.5, 5, 50 and 500 mg test item/L.
Based on act. ingr., the 72h-ErC50 was determined to be 196.88 mg test item/L and the associated 72h-ErC10 was determined to be 56.77 mg test item/L. The 72h-EyC10 was determined to be 50.92 mg/L and the 72h-EyC50 was determined to be 170.92 mg/L
Also based on act. ingr., the 96h-ErC50 was determined to be 272.34 mg/L and the associated 96h-ErC10 was determined to be 3.89 mg/L. The associated 96h-EyC10 was determined to be 35.06 mg/L and the associated 96h-EyC50 was determined to be 103.76 mg/L. All values were based on nominal concentrations.
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