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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
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:
- 21 December 2007 - 7 February 2008
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study has been performed according to OECD guidelines and according to GLP principles.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
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:
- other: Daphnia sp., Acute Immobilization Test stipulated in the "Testing Methods for New Chemical Substances" (November 21, 2003; No. 1121002, MHLW; November 13, 2003, No. 2, METI; No. 031121002, MOE, Japan)
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Details on test material:
- - Name of test material (as cited in study report): S-500
- Substance type: yellow powder
- Physical state: solid
- Lot/batch No.: MF1456-2345
- Stability under test conditions: stable (confirmed by IR)
- Storage condition of test material: dark storage place at room temperature
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- - Concentrations: control and 100 mg/l (nominal)
- Sampling method: Equal volume for analysis was taken out from the middle layer of the test solution for each vessel and mixed. This was done at the start of exposure and the end of exposure.
- Sample storage conditions before analysis: not applicable
Test solutions
- Vehicle:
- no
- Details on test solutions:
- PREPARATION AND APPLICATION OF TEST SOLUTION (especially for difficult test substances)
- Method: mixing and stirring by magnetic stirrer for 48 h, followed by suction filtration with 0.4 µm glass fibre filter and 1 h stirring.
- Concentration of vehicle in test medium (stock solution and final test solution(s) including control(s)): not applicable
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name: Daphnia magna
- Strain: Clone A
- Source: In-house culture, but daphnids originally came from the University of Sheffield, UK.
- Age at study initiation (mean and range, SD): <24 hours
- Method of breeding: not indicated
- Feeding during test: no
ACCLIMATION
- Acclimation period: not applicable
- Acclimation conditions (same as test or not): parents: yes
- Type and amount of food: parents: Chlorella vulgaris (0.1-0.2 mg C/day per Daphnia)
- Feeding frequency: parents: once daily
- Health during acclimation (any mortality observed): parents: no mortality
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 48 h
Test conditions
- Hardness:
- 37 mg CaCO3/l
- Test temperature:
- 20°C
- pH:
- 7.9
- Dissolved oxygen:
- 8.7-8.8 mg/l
- Salinity:
- Not applicable.
- Nominal and measured concentrations:
- Nominal 100 mg/l:
peak 1 not detected (< 0.000071 mg/l),
peak 2 not detected (<0.00031 mg/l),
peak 3 not detected at the start of the test (<0.0024 mg/l), but 0.0028 mg/l at end of test
peak 4 not detected (<0.0045 mg/l)
Test item (i.e. sum of 4 peaks) not detected (<0.0073 mg/l). - Details on test conditions:
- TEST SYSTEM
- Test vessel:
- Type (delete if not applicable): closed with lid
- Material, size, headspace, fill volume: 100 ml glass beaker, fill volume 100 ml
- Aeration: no
- No. of organisms per vessel: 5
- No. of vessels per concentration (replicates):4
- No. of vessels per control (replicates): 4
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: dechlorinated tap water
- Total organic carbon: <0.1 mg/l
- Particulate matter: <1 mg/l
- Pesticides: <0.0001 mg/l each
- Chlorine: <0.02 mg/l
- Alkalinity: 29 mg/l
- Ca/mg ratio: 10.3 / 2.8
- Conductivity: 15.5 mS/m
- Culture medium different from test medium: no
OTHER TEST CONDITIONS
- Adjustment of pH: no
- Photoperiod: 16 h light / 8 h dark
- Light intensity: artificial light of white fluorescent lamp
EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : EC50 and EL50 - Reference substance (positive control):
- yes
- Remarks:
- K2Cr2O7
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: effect concentration > solubility of test item in dilution water
- Duration:
- 48 h
- Dose descriptor:
- EL50
- Effect conc.:
- > 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Details on results:
- - Behavioural abnormalities: no abnormalities
- Mortality of control: no immobility
- Effect concentrations exceeding solubility of substance in test medium: no effects above the solubility of the test substance. - Results with reference substance (positive control):
- - Results with reference substance valid? Yes
- EC50/LC50: 48-h EC50 0.28 mg/l
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The study was conducted as a limit test in order to confirm the effect of the test item on the test organisms at around the solubility of the test item in dilution water. As a result, the concentration of the test item in test solutions during the exposure was below the determination limit (<0.0073 mg/L), indicating that the concentrations of the dissolved test item in dilution water was not clarified. However, no adverse effect was found in the definitive study. Therefore, it was decided that the test item had no adverse acute effect on the test organisms at around the solubility in dilution water. The environmental conditions were within the suitable range, therefore, it was concluded that the study complied with the applied test guidelines.
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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