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EC number: 205-252-7 | CAS number: 136-60-7
- 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
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- not reported
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Remarks:
- Non GLP study. The study was conducted according to a method equivalent to the OECD 106 guideline without major deviations. However, no data on test conditions are reported.
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 106 (Adsorption - Desorption Using a Batch Equilibrium Method)
- Version / remarks:
- von Oepen et al., 1989, 1990
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- batch equilibrium method
- Media:
- soil
- Radiolabelling:
- no
- Test temperature:
- not specified
- Analytical monitoring:
- yes
- Details on sampling:
- After reaching the equilibrium the soil samples were centrifuged, decanted, and the concentrations in the supernatant were determined by means of GC, HPLC or scintillation measurements (von Oepen 1990). All samples were determined in parallel. One control and one blank were investigated additionally.
- Matrix no.:
- #1
- Matrix type:
- Podzol
- % Clay:
- 2.6
- % Silt:
- 8.2
- % Sand:
- 89.2
- % Org. carbon:
- 4.85
- pH:
- 2.8
- CEC:
- 15.1 meq/100 g soil d.w.
- Matrix no.:
- #2
- Matrix type:
- Alfisol
- % Clay:
- 15.9
- % Silt:
- 14.4
- % Sand:
- 69.7
- % Org. carbon:
- 1.25
- pH:
- 6.7
- CEC:
- 12.3 meq/100 g soil d.w.
- Matrix no.:
- #3
- Matrix type:
- other: Sediment
- % Clay:
- 35.7
- % Silt:
- 58.8
- % Sand:
- 5.5
- % Org. carbon:
- 1.58
- pH:
- 7.1
- CEC:
- 13.4 meq/100 g soil d.w.
- Details on matrix:
- The soils used for testing were selected under support of Prof. Fräinzle and Brümmer (von Oepen 1989) considering representativity for the FRG and covering a broad spectrum of sorption relevant properties e.g. organic carbon content (% oc), clay content , pH value, Cation Exchange Capacity etc.. The soils used for testing were an acidic forest soil, a Podzol and an agricultural soil (Alfisol). Additionally the sorption behaviour of a sublimnic soil, a sediment of the Lake Constance, was investigated.
- Details on test conditions:
- TEST SYSTEM
- Method of preparation of test solution: The preparation of the soils for testing, e.g. homogenization, sterilization etc., in order to obtain reproducible results was described in an earlier publication (von Oepen et al. 1989). First the sorption kinetics were determined for special selected compounds of each substance class according to the OECD-Guideline 106 (c.f.e.g. von Oepen 1989). 50 mL of the test solution were added to 10 g (dry weight) of the specific soils. The soil samples were shaken for 0.5, 1, 1.5, 5, 24 respectively 72 hours. Then an aliquot of 1 mL of the water-phase was removed and the concentration of the substance in the aqueous phase was determined. As for all investigated substances the sorption equilibrium was reached within 16 hours, the Freundlich isotherms were determined after an incubation period of 16 hours. The initial concentrations used were about 15 mg/L, 5 mg/L, 0.5 and 0.15 mg/L. - Key result
- Type:
- Koc
- Value:
- 125 dimensionless
- Matrix:
- Alfisol
- % Org. carbon:
- 1.25
- Type:
- Koc
- Value:
- 162 dimensionless
- Matrix:
- Podzol
- % Org. carbon:
- 4.85
- Type:
- Koc
- Value:
- 92 dimensionless
- Matrix:
- Sediment
- % Org. carbon:
- 1.58
- Duration:
- 16 h
- % Desorption:
- > 80
- Validity criteria fulfilled:
- yes
- Conclusions:
- The modified batch-equilibrium method was applied for the determination of the adsorption coefficient (Koc) of the test substance. The mean Koc was determined to be 128. The results of the test can be considered reliable without restriction.
Reference
Description of key information
This endpoint is covered with a non GLP-study (key, publication, von Oepen, 1991) performed according to the modified test guideline OECD 106. The mean Koc of the test substance was determined to be 128 using the batch-equilibrium method.
Key value for chemical safety assessment
- Koc at 20 °C:
- 128
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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