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EC number: 236-599-2 | CAS number: 13446-49-6
- 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
Short-term toxicity to aquatic invertebrates
Administrative data
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- dec 1991 - march 1992
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study was well performed but no measured data were available.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 994
- Report date:
- 1994
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Version / remarks:
- part 1
- Qualifier:
- according to guideline
- Guideline:
- other: EEC directive 67/548 annex V, c2 as published in 84/449/EEC
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Diammonium dimolybdate
- EC Number:
- 248-517-2
- EC Name:
- Diammonium dimolybdate
- Cas Number:
- 27546-07-2
- IUPAC Name:
- Diammonium dimolybdate
- Reference substance name:
- not listed248-517-2
- IUPAC Name:
- not listed248-517-2
- Details on test material:
- - white powder
- purity: 56,20 % molybdenum
- storage: in darkness at room temperature
- method of preparation: direct dispersion in water
- stability of test concentrations: not applicable
Constituent 1
Constituent 2
Sampling and analysis
- Analytical monitoring:
- not specified
Test solutions
- Vehicle:
- no
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- - 1st instar
- culture: at 20 +/- 2 degrees Celsius in glass vessels containing 2L of dechlorinated and aged tap water. Cultures were fed daily with a mixture of fry fish food and a suspension of mixed algae. Culture conditions ensure that reproduction is by parthogenesis
- selection: gravid adults were isolated 24h prior to initiation of the test. young daphnids produced overnight were used for testing.
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 48 h
Test conditions
- Hardness:
- 150-200 mg/mL
- Test temperature:
- 21°C
- pH:
- 7,1
- Nominal and measured concentrations:
- 10, 18, 32, 56, 100, 180, 320, 560 and 1000 mg/L
in duplicate - Details on test conditions:
- - test vessels: glass jars each containing 200 mL test solution
- experimental design: 20 animals per test concentration
- method of initiation: daphnia were placed in the test solutions after addition of the test substance
- loading: 20ml test solution per organism
- photoperiod: 16h light:8h dark
- aeration: none
-temp: 21 degrees Celsius
- medium renewal: none
- criterion of effect: daphnia were considered to be immobilised if they were unable to swim for approx 15 seconds after gentle agitation
Results and discussion
Effect concentrations
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 79 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- element
- Basis for effect:
- mortality
- Details on results:
- results for molybdate-salt: 140 mg/L
- Reported statistics and error estimates:
- Analysis according to Thompson and Weil (1952). Biometrics 8, 51-54.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Conclusions:
- This study is well performed and documentd. The measured data are not included but standard guidelines were followed. The outcome of this study (i.e., the reported LC50) can be considered for the hazard assessment (classification ) of molybdenum compounds.
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