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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Details on test material:
- - Name of test material (as cited in study report): WS400517
- Physical state: White powder
- Analytical purity: Not applicable (complex mixture)
- Lot/batch No.: HH-09-168
- Expiration date of the lot/batch: 21 January 2011
- Storage condition of test material: Room temperature in the dark
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- At the start of the test, four samples (50 mL) were taken from freshly prepared control and test media.
After 48 hours, four samples (50 mL) of control and test media were taken from the pooled media in replicate vessels.
Samples were stored in a freezer until analysis.
Test solutions
- Vehicle:
- no
- Details on test solutions:
- PREPARATION AND APPLICATION OF TEST SOLUTION (especially for difficult test substances)
- Method: water accommodated fractions (WAFs)
100 mg test material was dispersed in 1L dilution medium (Elendt M4 medium) in a glass vessel. The contents of the vessel were stirred for approximately 24 hours and then left to stand for approximately 48 hours. An aliquot (800 mL) was then removed mid-vessel to provide the Water Accommodated Fraction (WAF).
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Source: in-house culture originating from a strain supplied by the National Institute for Applied Chemical Research (IRCHA), France
- Age at study initiation: < 24 h
- Method of breeding: Stock cultures of Daphnia magna were maintained in glass vessels containing approximately 0.5 to 0.8 litres of Elendt M4 culture medium in a temperature-controlled laboratory at nominally 20 ± 2°C. A photoperiod of 16 hours light : 8 hours dark was maintained, with periods of subdued lighting at the beginning and end of each light phase. The culture medium was renewed three times each week.
Cultures were fed daily with a suspension of the unicellular green algae, Pseudokirchneriella subcapitata, to provide nominally 0.1 to 0.2 mg carbon per daphnid, per day, except during the initial three days when a slightly lower ration was given. Culture conditions ensure that the stock animals reproduce by parthenogenesis.
The day before the start of the study, all juvenile Daphnia were removed from the laboratory cultures. The following morning, juveniles produced by the gravid (egg-bearing) adult Daphnia were removed from the culture vessels and held in a separate holding vessel.
- Feeding during test: none
ACCLIMATION
- Acclimation period: not relevant, conditions were the same for maintenance and testing
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 48 h
Test conditions
- Hardness:
- 260-270 mg/L as CaCO3
- Test temperature:
- 19.5-20 °C
- pH:
- 7.95-8.1
- Dissolved oxygen:
- 96-106 % air saturation value
- Nominal and measured concentrations:
- nominal loading rate: 100 mg test material/L
mean measured TOC levels at test start: 2.26 mgC/L
mean measured TOC levels at test end: 2.23 mgC/L
geometric mean value: 2.24 mgC/L - Details on test conditions:
- TEST SYSTEM
- Test vessel: glass dishes containing approx. 120 mL of medium, covered leaving no headspace
- Aeration: none
- No. of organisms per vessel: 5
- No. of vessels per concentration (replicates): 4
- No. of vessels per control (replicates): 4
- Biomass loading rate: 24 mL medium per organism
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: Elendt M4 medium (according to guideline), prepared in deionised, reverse osmosis water
- Total organic carbon: 1.4 mg C/L
- Alkalinity: 38-50 mg/L as CaCO3
- Ca/Mg ratio: 3.7:1
- Culture medium different from test medium: no
OTHER TEST CONDITIONS
- Adjustment of pH: no
- Photoperiod: 16 hours light : 8 hours dark with periods of subdued lighting at the beginning and end of each light phase
EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : numbers of mobile, immobile and floating Daphnia counted approx. 24 and 48 hours after the start of the study
RANGE FINDING STUDY
- Test concentrations: nominal loading rates of 1, 10 and 100 mg/L
- Results used to determine the conditions for the definitive study: no significant immobility after 48 hours. - Reference substance (positive control):
- yes
- Remarks:
- potassium dichromate
Results and discussion
Effect concentrationsopen allclose all
- Key result
- Duration:
- 48 h
- Dose descriptor:
- EL50
- Effect conc.:
- > 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: results are expressed in terms of loading rates
- Key result
- Duration:
- 48 h
- Dose descriptor:
- NOELR
- Effect conc.:
- >= 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: results are expressed in terms of loading rates
- Details on results:
- - Immobilised Daphnia: none
- Behavioural abnormalities: none
- Mortality of control: none
- Other adverse effects control: none
- Abnormal responses: none
The test medium was a colourless dispersion. - Results with reference substance (positive control):
- - 48-hour EC50: 1.3 mg/L (within the range typically obtained in this laboratory)
- Reported statistics and error estimates:
- The “no observed effect loading rate” (NOELR) was derived by direct inspection of the data on the immobility of the animals. An incidence rate of more than 10% was considered to be significant.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Remarks:
- In the control, no Daphnia have been immobilised or trapped at the surface of the water. The dissolved oxygen concentration at the end of the test was ≥60% of the air saturation value at the temperature used.
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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