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Diss Factsheets
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EC number: 202-855-7 | CAS number: 100-47-0
- 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)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- Principles of Menthode not stated in the report
- GLP compliance:
- not specified
- Remarks:
- (collection of data)
- Analytical monitoring:
- not specified
- Vehicle:
- not specified
- Test organisms (species):
- Scenedesmus quadricauda
- Test type:
- static
- Water media type:
- not specified
- Limit test:
- no
- Remarks on exposure duration:
- no data
- Key result
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 75 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Validity criteria fulfilled:
- not specified
- Conclusions:
- The effect on population growth is at 75 mg/l.
- Executive summary:
The effect of benzonitrile on Scendedesmus quadricauda was assessed in a static laboratory study at pH 7.0 and T = 27 °C. The effect level based on population growth is 75 mg/l.
Reference
compared with LT50 for bacteria
Description of key information
The effect of benzonitril on population growth of Scendedesmus quadricauda was determined to be at 75 mg/l.
Key value for chemical safety assessment
Additional information
The effect of benzonitrile on Scendedesmus quadricauda was assessed in a static laboratory study at pH 7.0 and T = 27 °C. The effect level based on population growth is 75 mg/l.
Further details are not reported in the secondary reference (Hazardous Materials. Benzonitrile) citing Bringmann & Kühn (Bringmann, G. and Kühn, R. 1977. Limiting values for the damaging action of water pollutants to bacteria (Pseudomonas putida) and green algae (Scendesmus quadricauda) in the ... Wasser Abwasser Forsch. 10 (3 -4): 87-98).
In other studies Bringmann & Kühn (not cited in this dossier) examined the influence of chemical substances on population growth of Scenedesmus quadricauda. In these studies the examined effect is the toxicity threshold (TT). The TT is determined using an analogous method of the cell multiplication test. The concentration at which the inhibitory action of a pollutant begins is present in that dilution from a series of dilutiuons of the test substance having, at the end of the test period, a mean extinction value that is >/= 3 % below the mean value of the extinction value for non-toxic dilutions of the test cultures.
Therefore, it is assumed that the described "effect on population growth" is equivalent to the TT value.
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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