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EC number: 602-927-1 | CAS number: 123312-89-0
- 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 aquatic plants other than algae
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic plants other than algae
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 25 May 1995 to 08 Jun 1995
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other:
- Version / remarks:
- FIFRA Guideline No. 123-2
- Deviations:
- no
- GLP compliance:
- yes
- Test organisms (species):
- Lemna gibba
- Test type:
- static
- Duration:
- 14 d
- Dose descriptor:
- EC50
- Effect conc.:
- > 109 mg/L
- Nominal / measured:
- meas. (initial)
- Conc. based on:
- test mat.
- Basis for effect:
- frond number
- Duration:
- 14 d
- Dose descriptor:
- NOEC
- Effect conc.:
- 49.2 mg/L
- Nominal / measured:
- meas. (initial)
- Conc. based on:
- test mat.
- Basis for effect:
- frond number
- Validity criteria fulfilled:
- yes
- Conclusions:
- The duckweed population in the control vessels grew well, increasing from an average of 12 fronds per vessel to an average of 217 fronds per vessel after 14 days. The EC25, EC50 and NOEC values were 68, > 109 and 49 mg/L, respectively.
- Executive summary:
The effect of the test substance on the growth of the duckweed Lemna gibba was studied for 14 days under static conditions at pH 5 and continous illumination. The study was performed according to the FIFRA Guideline No. 123-2 guideline. Nominal test concentrations were 8.5 to 130 mg/L; the initial measured concentrations amounted to 71-84 % of the nominal concentrations (between 6.1 and 109 mg/L) but showed a strong decrease to below the analytical detection limit (5.1 mg/L) after 14 days, indicating some type of absorption or degradation. The EC25, EC50 and NOEC values were 68, > 109 and 49 mg/L, respectively. They are determined on basis of effects on the frond production after 14 days exposure and refer to initial measured test concentrations. The NOEC is based on the number of non-chlorotic fronds.
Reference
Nominal test concentrations were 8.5 to 130 mg/L; the initial measured concentrations amounted to 71-84 % of the nominal concentrations (between 6.1 and 109 mg/L) but showed a strong decrease to below the analytical detection limit (5.1 mg/L) after 14 days, indicating some type of absorption or degradation.
The duckweed population in the control vessels grew well, increasing from an average of 12 fronds per vessel to an average of 217 fronds per vessel after 14 days. The EC25, EC50 and NOEC values were 68, > 109 and 49 mg/L, respectively. They are determined on basis of effects on the frond production after 14 days exposure and refer to initial measured test concentrations. The NOEC is based on the number of non-chlorotic fronds.
Analytical results:
Nominal concentration (mg/L) |
Measured concentration (mg/L) |
|
|
Day 0 |
Day 14 |
0 (control) |
< 5.06 (LOD) |
< 5.06 (LOD) |
8.5 |
6.06 |
< 5.06 (LOD) |
17 |
12.2 |
< 5.06 (LOD) |
33 |
20.6 28.0 |
< 5.06 (LOD) |
65 |
49.2 |
< 5.06 (LOD) |
130 |
109 |
< 5.06 (LOD) |
Description of key information
The 14-d EC50 and NOEC are > 109and 49.2 mg/L, respectively, in duckweed, FIFRA Guideline No. 123-2, Boeri 1995.
Information on this endpoint is not part of Annex VIII data requirements; all included studies are marked as supporting information and considered in the CSA.
Key value for chemical safety assessment
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.
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.