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Diss Factsheets
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EC number: 434-800-1 | CAS number: 121776-33-8
- 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)
Description of key information
In a soil adsorption/desorption study, the Freundlich adsorption coefficient (K) for MON 13900 ranged from 0.60 to 3.72, the adsorption distribution coefficient Kd from 0.64 to 5.16 and the adsorption coefficient as a function of organic carbon content (Koc) from 55.7 to 289.9 (log Koc: 1.74 to 2.46). These values suggest that MON 13900 has a low to moderate potential to adsorb to soil.
Key value for chemical safety assessment
- Koc at 20 °C:
- 289.9
Additional information
An adsorption/desorption (batch equilibrium) study was conducted to determine the leaching potential of MON 13900 and its aerobic soil metabolites in four different soils according to a company-internal protocol designed to satisfy US EPA Guideline 163-1. A mixture of MON 13900 and its aerobic soil metabolites was generated by aging aerobically14C-labelled test substance in Sarpy sandy loam soil for 30 d, then extracting with a solvent mixture. The soil extract was concentrated to remove organic solvent, then dosing solutions containing a mixture of the test substance and its aerobic soil metabolites were prepared. Four solution concentrations (0.050, 0.202, 0.603 and 0.945 ppm test substance equivalents) were used in the adsorption/desorption experiment. Portions of Drummer silt loam, sable silty day loam, sarpy sandy loam and spinks loamy sand were subjected to one adsorption step with each solution, followed by three desorption steps with fresh 0.01 M aqueous CaSO4 (5:1 solution:soil). Liquid scintillation counting was used to monitor concentrations. The distribution of MON 13900 and its metabolites in the solutions was determined where feasible by high performance liquid chromatography with radioactive flow detection. Adsorption distribution and Freundlich coefficients were calculated for each soil. The Freundlich adsorption coefficient (K) ranged from 0.79 to 3.50 for the MON 13900 and soil metabolite mixture, and from 0.60 to 3.72 for MON 13900 alone. The adsorption distribution coefficient (Kd) ranged from 0.82 to 4.40 for the test substance and soil metabolite mixture, and from 0.64 to 5.16 for the test substance alone. The adsorption coefficient as a function of organic carbon content (Koc) ranged from 71.3 to 247.2 for the test substance and soil metabolite mixture, and from 55.7 to 289.9 for the test substance alone. The results indicate that MON 13900 and its aerobic soil metabolites are moderately adsorbed to silt loam soils and poorly adsorbed to sandy loam and loamy sand soils. Desorption of test substance and its soil metabolites were essentially complete after three desorption cycles. These characteristics suggest that MON 13900 may have a potential for movement through soil.
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