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Diss Factsheets
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EC number: - | CAS number: -
- 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
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_ecotoxicological-information.png)
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:
- 14 -16 July 2003
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Study conducted according with OECD Guideline No. 202 (draft 2000) and in accordance with GLP principles. The study is considered to be reliable with restrictions since the measured Zn concentrations in this study are in the same range of the LOQ, which shows a too high recovery (155%). The high recovery is probably the result of Zn contamination of water samples during laboratorial handling. Therefore, an underestimation of the test substance toxicity could be occurring. However, as no mortality occurred at the at the maximum solubility of the test substance, this constraint is deemed acceptable.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 003
- Report date:
- 2003
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Version / remarks:
- (draft 2000)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Details on test material:
- - Name of test material (as cited in study report): Leuchtstoff L 165
- Physical state: Solid (powder)
- Stability under test conditions: Not available
- Storage condition of test material: room temperature, dark and dry
- Expiration date of the lot/batch: not applicable (according to the sponsor unlimited storable, when protected from humidity)
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- - Concentrations: 0 (control) and 100 mg/L (loading rate)
- Sampling method: Not reported
- Sample storage conditions before analysis: The samples were stored at a temperature of ≤-18 °C until the beginning of analysis.
Test solutions
- Vehicle:
- no
- Details on test solutions:
- PREPARATION AND APPLICATION OF TEST SOLUTION
- Method: A total of 0.100 g L 165 were added to 1 L of dilution water. This stock solution was shaken for 48 hours and then filtered (0.45 µm). The resulting filtrate was the final solution used to expose daphnids.
- Evidence of undissolved material (e.g. precipitate, surface film, etc): Not reported
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name: Water fleas
- Source: Landesanstalt für Umweltschutz Baden-Württemberg Griesbachstr. 1, D-76185 Karlsruhe
- Age at study initiation: <24 h
- Method of breeding: under standardised laboratory conditions
- Feeding during test: None
ACCLIMATION
- Acclimation period: Not specified
- Acclimation conditions (same as test or not): Yes
- Food type: Alga Desmodesmus subspicatus origin: Albrecht-v.-HalLer-Institut für Pflanzenwissenschaften, Niklausberger Weg 18, D-37073 Gottingen
- Amount: Daphnia of different age were fed with a defined suspension of algae:
1 day old: 0.5 ml/50 ml M4; 3 to 10 days old: 1.0 ml/50 ml M4; > 10 days old: 1.5 ml/50 ml M4
- Feeding frequency: daily
- Health during acclimation (any mortality observed): Not reported
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 48 h
Test conditions
- Hardness:
- 200 mg/L CaCO3
- Test temperature:
- 19.9 - 20.3 °C
- pH:
- 7.77 - 7.85
- Dissolved oxygen:
- 8.50 - 9.08 mg/L
- Nominal and measured concentrations:
- - Nominal: 0 (blank control) and 100 mg/L (loading rate)
- Average measured (Zn content): <0.012 (blank control) and 0.023 mg Zn/L - Details on test conditions:
- TEST SYSTEM
- Test vessel: Glass beaker with a capacity of 150 ml and filled with 100 ml of test solution
- Aeration: None
- No. of organisms per vessel: 5
- No. of vessels per concentration (replicates): 4
- No. of vessels per control (replicates): 4
- Loading: 1 daphnid per 20 ml of test solution
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: dilution water according to ISO 6341
- Conductivity: 0.656 µS/cm
- Culture medium different from test medium: yes
- Intervals of water quality measurement: At 0 and 48 h the pH, dissolved oxygen and test temperature were measured.
OTHER TEST CONDITIONS
- Adjustment of pH: No
- Photoperiod: 16 h light : 8 h dark
EFFECT PARAMETERS MEASURED (with observation intervals if applicable): At 24 and 48 h the number of immobilised Daphnia per vessel (including discoloration, anomalies) were determined. - Reference substance (positive control):
- yes
- Remarks:
- Potassium dichromate
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 0.023 other: mg Zn/L
- Nominal / measured:
- meas. (arithm. mean)
- Conc. based on:
- element
- Remarks:
- total measured amount of Zinc (Zn)
- Basis for effect:
- mobility
- Remarks on result:
- other: Obtained at a loading rate of 100 mg/L
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Basis for effect:
- mobility
- Remarks on result:
- other: > than the maximum soluble concentration in the test medium
- Details on results:
- - Measured concentrations: At 48 h the test concentration corresponded to 32% of the initial measured concentration. Therefore, the EC50 was expressed as analysed mean measured concentrations.
- Biological results: No mortality or any visible signs of abnormality were observed during the entire test period.
- Validity criteria
Immobilised daphnids: ≤10% in the control
Oxygen concentration at the end of the test: ≥3 mg/L in control and test vessels - Results with reference substance (positive control):
- - The 48 h EC50 for potassium dichromate was 1.25 mg/L.
- Reported statistics and error estimates:
- - No statistical evaluation was performed.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- Under laboratory conditions no effects of the test item L 165 on immobilisation of daphnids were determined. The 48 h EC50 referred to Zn content was >0.023 mg Zn/L.
- Executive summary:
In a 48 h acute toxicity limit test conducted according to OECD guideline 202 (draft 2000), water fleas (Daphia magna) were exposed to L 165 under static conditions at loading rate of 100 mg/L. The test substance did not induce significant acute immobilisation of Daphnia magna at 0.023 mg Zn/L after 48 hours of exposure. The 48 h EC50 was >0.023 mg Zn/L based on the average measured concentrations.
The study is considered to be reliable with restrictions since the measured Zn concentrations in this study are in the same range of the LOQ, which shows a too high recovery (155%). The high recovery is probably the result of Zn contamination of water samples during laboratorial handling. Therefore, an underestimation of the test substance toxicity could be occurring. However, as no mortality occurred at the at the maximum solubility of the test substance, this constraint is deemed acceptable.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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