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Diss Factsheets
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EC number: 270-451-8 | CAS number: 68440-34-6
- 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
Toxicity to other aquatic organisms
Administrative data
- Endpoint:
- toxicity to other aquatic vertebrates
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Acceptable field study that meets basic scientific principles
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- publication
- Title:
- Influence of low concentrations of cadmium, copper and zinc on phytoplankton of natural water samples
- Author:
- Wolter K, U. Rabsch, P. Krischker and A. G. Davies
- Year:
- 1 984
- Bibliographic source:
- Mar Ecol Prog Ser 19: 167-173
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Field experiment on natural phytoplancton communities looking at C fixation rates as the endpoint, designed for dose-response
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Zinc chloride
- EC Number:
- 231-592-0
- EC Name:
- Zinc chloride
- Cas Number:
- 7646-85-7
- IUPAC Name:
- zinc dichloride
- Details on test material:
- ZnCl2 is coming from Merck-Titrisol Cl- standards
carrierfree Zn-65 was added as radioactive tracer isotope
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- no
Test organisms
- Test organisms (species):
- other: natural phytoplancton communities from field
- Details on test organisms:
- Phytoplankton communities dominated by diatoms from genus Rhizoselenia coming from various places including Kiel Fjord (Baltic Sea), North Sea and costal water off Portugal in the Atlantic ocean
Study design
- Test type:
- static
- Water media type:
- saltwater
- Limit test:
- no
Test conditions
- Nominal and measured concentrations:
- measured Zn concentrations: control, 4.3 to 304.3 µg Zn/L in Kiel Fjord experiment and 0.29 to 1.45 µg/L in Poseidon Cruise (North Sea and North Atlantic); triplicates
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 4 h
- Dose descriptor:
- LOEC
- Effect conc.:
- > 100 µg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- dissolved
- Basis for effect:
- other: C fixation rate
- Duration:
- 24 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 1.45 µg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- dissolved
- Basis for effect:
- other: C fixation rate (growth)
- Remarks on result:
- other: unbounded NOEC
- Details on results:
- LOEC (C fixation rate) Kiel Fjord: >100 µg/L
No effect observed (no decrease of plankton activity) in North Sea
and North Atlantic subsamples - Reported statistics and error estimates:
- no statistics reported
Any other information on results incl. tables
no remark
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- Relevant field study considered useful to check the protection level provided by the HC5 following from statistical extrapolation of single species test data
- Executive summary:
This study refers to testing on phytoplankton communities in various places including Kiel Fjord, North Sea and a coastal area of the Atlantic ocean. The samples contained mixed phytoplankton populations which were dominated by diatoms. Zinc reduced plankton activity in the Kiel Fjord samples at concentrations > 100 µg l-1added Zn. Carbon fixation measurements carried out four and 24 hours after metal addition to the North Sea and Atlantic ocean samples were not reduced at any test concentration.
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