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EC number: 422-460-5 | CAS number: 137234-87-8 UK-103,442
- 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:
- From 1998-11-13 to 1999-03-03
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC))
- Version / remarks:
- April 1994
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- HPLC estimation method
- Media:
- soil
- Specific details on test material used for the study:
- Batch No.: 960509
Purity: 92.3% - Radiolabelling:
- no
- Test temperature:
- 20 ℃
- Details on study design: HPLC method:
- EQUIPMENT
- Type, material and dimension of analytical (guard) column: Cyano Apex. 5 μm, 25 cm x 4.6 mm id.
- Detection system: Model 481, Waters Associates
MOBILE PHASES
- Type: Methanol/0.01 M citrate buffer, 55/45, vv
- pH: 6.53
- Solutes for dissolving test and reference substances: methanol / 0.01 M citrate buffer
DETERMINATION OF DEAD TIME
- Method: The dead time (the average time a solvent molecule needs to pass through the column) was taken as 3.222 minutes, the time of the earliest consistently appearing peak (mean of 3.220 and 3.223 minutes). Thiourea (a recommended organic compound for the measurement of the dead time) was used.
REFERENCE SUBSTANCES
- Identity: Monuron, Triapenthenol, Triadimeton, Azinphos-methyl, Fenthion, Trifluralin
DETERMINATION OF RETENTION TIMES
- Quantity of test substance introduced in the column: No peaks were seen in either of the blank solution chromatograms at the characteristic retention time of the test substance.
REPETITIONS
- Number of determinations: 2
EVALUATION
- Calculation of capacity factors k': (tR-t0)/t0
- Determination of the log Koc value: (logk-l)/S (l: intercept derived from linear regression of reference compounds, S: slope derived from linear regiession of reference compounds) - Type:
- Koc
- Value:
- < 98
- pH:
- 6.55
- Temp.:
- 20 °C
- Details on results (HPLC method):
- - Retention times of reference substances used for calibration: ranging from 4.573 to 14.400 minutes
- Details of fitted regression line (log k' vs. log Koc): log k' = -1.2286 + 0.45444log Koc
- Graph of regression line attached
- Average retention data for test substance: 3.095 minites - Validity criteria fulfilled:
- yes
- Conclusions:
- The soil adsorption coefficient of test substance has been determined as Koc < 98 at 20℃. The result indicates that the test substance is likely to have high mobility in soils.
- Executive summary:
The soil adsorption coefficient was determined by the high performance liquid chromatography (HPLC) method as described in OECD121.
The retention time obtained for test item was lower than the reference compounds.
Therefore, the soil adsorption coefficient of test substance has been determined as Koc < 98 at 20℃. The result indicates that the test substance is likely to have high mobility in soils.
Reference
Description of key information
The soil adsorption coefficient was determined by the high performance liquid chromatography (HPLC) method as described in OECD121.
The soil adsorption coefficient of test substance has been determined as Koc < 98 at 20℃
Key value for chemical safety assessment
- Koc at 20 °C:
- 98
Additional information
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