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EC number: 419-690-3 | CAS number: 88020-55-7
- 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
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- March 2-6th, 1987
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 987
- Report date:
- 1987
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: The toxicity test was performed according to the SBI protocol "96-hour toxicity test with the Freshwater Alga, Selenastrum capriconutum", february 1987.Culture techniques and test procedures were based on the Algal Acute Toxicity Test (US EPA, 1985a) and
- Deviations:
- not specified
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 419-690-3
- EC Name:
- -
- Cas Number:
- 88020-55-7
- Molecular formula:
- [(C12H25)3NH]4Mo8O26
- IUPAC Name:
- tridodecylamine hydrate molybdenum
Constituent 1
Sampling and analysis
- Analytical monitoring:
- not specified
Test solutions
- Vehicle:
- not specified
- Details on test solutions:
- A clear, green superstock solution of 100mg/L was prepared by adding 5,01 g of NORCAT M to a sterile 50mL volumetric flask and diluting to volume with acetone. The superstock solution was ultraconicated for approximately 5 minutes to ensure that all of the test material had gone into solution. 100 microlitres of the superstock solution were added to a sterile 1L volumetric flask and diluted to volume with MDL solution to prepare a 10mg/L stock solution. Test solutions were prepared by adding appropriate volumes of stock solution to sterile 500mL volumetric flask, and diluting to volume with MDL medium. 2 control flasks containing MDL medium but no test material were prepared. One flask contained the greatest amounts of solvant used (0.1mL/L) and was labelled the Solvant Control. Test flasks labelled Control and solvant control were maintained under the same conditions as the test flasks containing NORCAT M.
Test organisms
- Test organisms (species):
- Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
- Details on test organisms:
- TEST ORGANISM
- Common name: Selenastrum capricornutum
- Strain: Freshwater green alga
- Source (laboratory, culture collection): Carolina Biological Supply Company Burlington, North Carolina,
- Age of inoculum (at test initiation): 7-day-old inoculum
- Method of cultivation:
Medium prepared with deionized water.
ACCLIMATION
- Acclimation period:
- Culturing media and conditions (same as test or not):
- Any deformed or abnormal cells observed:
Study design
- Test type:
- not specified
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 96 h
Test conditions
- Hardness:
- Water hardness : 160-180mg/L
- Test temperature:
- 23-24°c
- Details on test conditions:
- - Constant illumination (about 5 000lux)
- shaking at 100rpm
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 96 h
- Dose descriptor:
- EC50
- Effect conc.:
- 1.1 mg/L
- Remarks on result:
- other: 95% confidence interval : 0.024 - 120mg/L
- Duration:
- 96 h
- Dose descriptor:
- EC50
- Effect conc.:
- 0.14 mg/L
- Duration:
- 96 h
- Dose descriptor:
- IC50
- Effect conc.:
- 110 mg/L
- Duration:
- 96 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.015 mg/L
Any other information on results incl. tables
Measured test concentrations : (based on mean of 0- and 96 -hour analyses) :
0.0054 0.015 0.023 0.047 0.092 0.17 0.30 0.87 1.70 mg/L
Decrease (%) of the concentration of test substance, during the test period :
The test of concentration remains relatively constant between 0 and 96 hours.
Applicant's summary and conclusion
- Conclusions:
- 96-hour EC50 : 1.1mg/L, based on cell density (relative to the control)
NOEC : 0.015mg/L
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