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EC number: 201-325-2 | CAS number: 81-11-8
- 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
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:
- key study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Justification for type of information:
- Data from reliable peer reviewed data source
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- GLP compliance:
- not specified
- Analytical monitoring:
- no
- Details on sampling:
- - Concentrations: Total 7 nominal concentrations of test chemical were taken for the study ranging from 10-320 mg/l.
- Sampling method: Stock solutions were prepared with DMSO (100 mg/l). - Vehicle:
- yes
- Remarks:
- DMSO was used as a vehicle.
- Test organisms (species):
- Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
- Details on test organisms:
- TEST ORGANISM
- Common name: microalga - Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 72 h
- Details on test conditions:
- Controls with and without this vehicle were also setup during the study.
- Reference substance (positive control):
- not specified
- Key result
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 32 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- biomass
- Remarks on result:
- other: p < 0.05
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 76 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- biomass
- Details on results:
- The no observed effect concentration (NOEC) and median effective concentration (EC50) of test chemical was determined to be 32 and 76 mg/L, respectively.
- Validity criteria fulfilled:
- not specified
- Conclusions:
- Based on the effect on biomass of test chemical on test organism Selenastrum capricornutum ATCC 22662, the 72 hr NOEC and EC50 value was determined to be 32 and 76 mg/l, respectively.
- Executive summary:
Short term toxicity study was conducted for 72 hrs for determining the effect of test chemical on aquatic algae Selenastrum capricornutum ATCC 22662. The study was performed in accordance with the OECD Guideline 201 (Alga, Growth Inhibition Test) in a static system. Total 7 nominal concentrations of test chemical were taken for the study ranging from 10-320 mg/l. Stock solutions were prepared with DMSO (100 mg/l). Controls with and without the vehicle were also setup during the study. On the basis of the effect of test chemical on biomass of the test organism Selenastrum capricornutum ATCC 22662, the 72 hr NOEC and EC50 value was determined to be 32 and 76 mg/l, respectively. Thus, test chemical was considered as toxic to aquatic algae and hence, considered to be classified in 'aquatic chronic category 3' as per the CLP classification criteria.
Reference
Description of key information
Short term toxicity study was conducted for 72 hrs for determining the effect of test chemical on aquatic algae Selenastrum capricornutum ATCC 22662 (Secondary source, 1996). The study was performed in accordance with the OECD Guideline 201 (Alga, Growth Inhibition Test) in a static system. Total 7 nominal concentrations of test chemical were taken for the study ranging from 10-320 mg/l. Stock solutions were prepared with DMSO (100 mg/l). Controls with and without the vehicle were also setup during the study. On the basis of the effect of test chemical on biomass of the test organism Selenastrum capricornutum ATCC 22662, the 72 hr NOEC and EC50 value was determined to be 32 and 76 mg/l, respectively. Thus, test chemical was considered as toxic to aquatic algae and hence, considered to be classified in 'aquatic chronic category 3' as per the CLP classification criteria.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 76 mg/L
- EC10 or NOEC for freshwater algae:
- 32 mg/L
Additional information
Short term toxicity study was conducted for 72 hrs for determining the effect of test chemical on aquatic algae Selenastrum capricornutum ATCC 22662 (Secondary source, 1996). The study was performed in accordance with the OECD Guideline 201 (Alga, Growth Inhibition Test) in a static system. Total 7 nominal concentrations of test chemical were taken for the study ranging from 10-320 mg/l. Stock solutions were prepared with DMSO (100 mg/l). Controls with and without the vehicle were also setup during the study. On the basis of the effect of test chemical on biomass of the test organism Selenastrum capricornutum ATCC 22662, the 72 hr NOEC and EC50 value was determined to be 32 and 76 mg/l, respectively. Thus, test chemical was considered as toxic to aquatic algae and hence, considered to be classified in 'aquatic chronic category 3' as per the CLP classification criteria.
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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