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EC number: 407-870-4 | CAS number: 97384-48-0 CITROWANIL B
- 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 EC50 of Citrowanil B for the algae toxicity is 18 mg/l after 72 h.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 18 mg/L
- EC10 or NOEC for freshwater algae:
- 5 mg/L
Additional information
The study was performed to assess adverse effects of Citrowanil B on the growth (= increase in cell density) and the growth rate (= rate of increase in cell density with time) of the planktonic freshwater algal species Desmodesmus subspicatusover several generations.
The Study was conducted in accordance with EEC methods for Determination of Ecotoxicity Annex to Directive 92/69/EEC Part C, Method 3 “Algal inhibition test”.
Exponentially growing algal cells were exposed for a period of 72 hours to a rage of concentrations, nominally 2.5, 5, 10, 20 and 40 mg/l of Citrowanil B dissolved in water. Auxiliaries used to prepare the test media were an ultra turrax, a magnetic stirrer and a folded filter.
The cell density was measured at 24 hour intervals. Inhibition of the algal population was measured as reduction in growth (index b) and growth rate (index r), relative to control cultures grown under identical conditions. Growth and growth rate were used to calculate a No Observed Effect Concentration and a Lowest Observed Effect Concentration according to DUNNET (1955. 1964). The following values were determined:
Results [mg/l]:
EbC 50 (0-72h): 18
ErC 50 (0-72h): 24
NOEC [b] (tα 0.05): 5
LOEC [b] (tα 0.05): 10
NOEC [r] (tα 0.05): 5
LOEC [r] (tα 0.05): 10
All results are expressed in terms of nominal concentrations. The recovery rates ranged from 94.3 – 97.1 % of nominal values at 0 hours, and from 83.4 – 97.1 % of nominal values at 72 hours, respectively.
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