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Diss Factsheets
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EC number: 229-176-9 | CAS number: 6422-86-2
- 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
Modeled data is used to fulfill this endpoint as the physical/chemical properties of this substance prevented attempts to measure it experimentally.
Key value for chemical safety assessment
- Koc at 20 °C:
- 5.43
Additional information
A series of studies were performed to identify appropriate test system and analytical conditions for determining the adsorption/desorption (i.e., partitioning) of bis(2-ethylhexyl)terephthalate to soils and sediments. The experimental approach was based on OECD Test Guideline No. 106. In a preliminary study three sterilized soil types: Spodosol, Alfisol, and Entisol were utilized. In order to overcome the difficulty in measuring this substance in aqueous solution due to its extremely low waler solubility, a 14C isotope of the substance was used. The initial assessment of the analytical method for measuring the radio labeled substance in 0.01 M CaCl2 was performed. Using liquid scintillation counting, it was possible to measure the radio labeled substance at its limiting solubility and achieve recoveries of 95%-110%. Thereafter, a series of preliminary experiments were performed using varying compositions of soil, aqueous solution and test article. In these more complex systems, it was not possible to achieve good or reproducible recoveries of the radio labeled substance. Adsorption of the substance onto the surfaces of the glassware was a possible source of error. Deactivation of the glassware surfaces was attempted using sylilation, without success. Therefore, none of the test systems that were studied proved useful for performing adsorption/desportion, measurements. It was concluded that the high variation in the test system recoveries would not allow for adequate measurement of the adsorption/desorption characteristics of this test material. Due to the inability to determine this endpoint experimentally, the endpoint is fulfilled by weight of evidence using a range of values from QSAR estimations from three different methods. A log Koc value of 5.43 was obtained from the USEPA EPI Suite
KOCWIN QSAR model using a log Kow input of 8.39. Within the KOCWIN model a log Koc value of 5.07 was also obtained using the Molecular Connectivity Index Value method. A log Koc value of 6.6 was obtained using the ACDLabs model. Therfore, the log Koc is reported as being in the range of 5.07 to 6.6.
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