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Diss Factsheets
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EC number: 948-134-7 | 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
Link to relevant study record(s)
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From July 01, 2009 to July 09, 2009
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Deviations:
- yes
- Remarks:
- see 'Principles of method if other than guideline'
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 850.1010 (Aquatic Invertebrate Acute Toxicity Test, Freshwater Daphnids)
- Deviations:
- no
- Principles of method if other than guideline:
- Periodic analyses of well water for potential contaminants were not preformed according to Good Laboratory Practice Standards, but were performed using a certified laboratory and standard U.S. EPA analytical methods.
- GLP compliance:
- yes
- Analytical monitoring:
- yes
- Details on sampling:
- Mean measured test concentrations were determined from samples of test water collected from the batches of test solutions prepared for each treatment and control group at the beginning of the test, and from each replicate per treatment and control group at test termination.
- Vehicle:
- no
- Details on test solutions:
- Daphnids were exposed to a geometric series of five test concentrations and a negative (UV sterilized well water) control. Two replicate test chambers were maintained in each treatment and control group, with 10 daphnids in each test chamber, for a total of 20 daphnids per test concentration. Nominal test concentrations were selected based upon the results of an exploratory range finding toxicity test. Nominal test substance concentrations selected for the definitive study were: 3.1, 6.3, 13, 25 and 50 mgL.
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- Species: Cladoceran (Daphnia magna)
Age: < 24 hr at test initiation
Source: Wildlife International, Ltd. Maryland, USA
Feeding during test: Not fed during the exposure period - Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 48 h
- Hardness:
- 136 mg CaCO3/L (at test initiation)
- Test temperature:
- 20.2 – 20.6 st. C (Daily measurements)
20.0 – 20.5 st. C (Continuous Measurements) - pH:
- 8.5 – 8.9
- Dissolved oxygen:
- 7.7 – 8.8 mg/L (≥86% of air saturation)
- Conductivity:
- 356 μS/cm (at test initiation)
- Nominal and measured concentrations:
- Nominal: negative control; 3.1 mg/L; 6.3 mg/L; 13 mg/L; 25 mg/L; 50 mg/L
Mean Measured: < LOQ; 2.9 mg/L; 6.0 mg/L; 14 mg/L; 24 mg/L; 48 mg/L - Details on test conditions:
- Light intensity: 451 lux (at test initiation)
Photoperiod: 16-hour light: 8 hour darkness with 30 min. transition period - Reference substance (positive control):
- no
- Key result
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 15 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: Confidence intervals
- Remarks:
- 12 to 17 mg/L
- Key result
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 6 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Details on results:
- After 48-hours of exposure, all daphnids in the 2.9 and 6.0 mg MON 51803/L treatment groups appeared normal, with no overt signs of toxicity through out the test. Immobility at 48-hours in the 14, 24 and 48 mg test substance/L treatment groups was 40, 95 and 100%, respectively, with lethargy noted among surviving daphnids in the 14 and 24 mg test substance/L treatment group.
- Reported statistics and error estimates:
- The immobility data were analyzed using the computer program of C. E. Stephan. The program was designed to calculate the EC50 value and the 95% confidence interval by probit analysis, the moving average method, and binomial probability with nonlinear interpolation (8, 9, 10). In this study, the probit method was used to calculate both the 24 and 48-hour EC50 values. The no-immobility concentration and NOEC were determined by visual interpretation of the immobility and observation data.
- Validity criteria fulfilled:
- yes
- Conclusions:
- Under the study conditions, the 48 h EC50 value was 15 mg/L, with a 95% confidence interval of 12 to 17 mg/L. The slope of the concentration-response curve was 8.202. The no-immobility concentration and the NOEC were both 6.0 mg/L.
- Executive summary:
A study was conducted to determine the toxicity of the test substance to Daphnia magna according to OECD Guideline 202, EU Method C.2 and EPA OPPTS Method 850.1010, in compliance with GLP. Daphnids were exposed to a geometric series of five test concentrations and a negative (UV sterilized well water) control. Two replicate test chambers were maintained in each treatment and control group, with 10 daphnids in each test chamber, for a total of 20 daphnids per test concentration. Nominal concentrations were selected based upon the results of an exploratory range finding toxicity study. Nominal test substance concentrations selected for the definitive study were: 3.1, 6.3, 13, 25 and 50 mgL, which corresponded to 2.9; 6.0; 14; 24 and 48 mg/L mean measured values. Observations of immobility and other clinical signs were made approximately 3, 24 and 48 h after test initiation. Cumulative percent immobility observed in the treatment groups was used to determine EC50 values at 24 and 48 h. The no- immobility concentration and the NOEC were estimated by visual interpretation of the immobility and observation data. Under the study conditions, the 48 h EC50 was 15 mg/L, with a 95% confidence interval of 12 to 17 mg/L. The slope of the concentration-response curve was 8.202. The no-immobility concentration and the NOEC were both 6.0 mg/L (Minderhout, 2010).
Reference
Description of key information
A study was conducted to determine the toxicity of the test substance to Daphnia magna according to OECD Guideline 202, EU Method C.2 and EPA OPPTS Method 850.1010, in compliance with GLP. Daphnids were exposed to a geometric series of five test concentrations and a negative (UV sterilized well water) control. Two replicate test chambers were maintained in each treatment and control group, with 10 daphnids in each test chamber, for a total of 20 daphnids per test concentration. Nominal concentrations were selected based upon the results of an exploratory range finding toxicity study. Nominal test substance concentrations selected for the definitive study were: 3.1, 6.3, 13, 25 and 50 mgL, which corresponded to 2.9; 6.0; 14; 24 and 48 mg/L mean measured values. Observations of immobility and other clinical signs were made approximately 3, 24 and 48 h after test initiation. Cumulative percent immobility observed in the treatment groups was used to determine EC50 values at 24 and 48 h. The no- immobility concentration and the NOEC were estimated by visual interpretation of the immobility and observation data. Under the study conditions, the 48 h EC50 was 15 mg/L, with a 95% confidence interval of 12 to 17 mg/L. The slope of the concentration-response curve was 8.202. The no-immobility concentration and the NOEC were both 6.0 mg/L (Minderhout, 2010).
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 15 mg/L
Additional information
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.
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