Registration Dossier
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EC number: 206-108-6 | CAS number: 301-10-0
- 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

Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
Partition Coefficient for Sn(II) part of salt: Waived, as this property is not required nor relevant for an insoluble inorganic species.
Partition Coefficient for 2-ethylhexanoic acid is log Kow = 2.64
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 2.64
- at the temperature of:
- 25 °C
Additional information
When introduced to water, the Tin bis(2-ethylhexanoate) substance will dissociate (99% dissociated at pH > 6.8), where the Sn(II) will be initially speciated as the Sn(OH)2 substance, which will be oxidized in oxygenated solutions to become the insoluble solid SnO2. The 2-ethyl hexanoic acid part of the salt has its maximum water solubility at pH > 6.8, where it exists completely as the ethyl hexanoate anion. By definition, log Kow must be determined at pH where an ionizable substance is fully neutralized, in this case, pH < 2.8. The reported log Kow of 2-ethylhexanoic acid is 2.64. Because this value is the preferred/accepted value among those critically reviewed by Sangster (1989) and Hansch et al. (1995), the determination is assumed to be made at 25 °C and pH where the substance is not ionized. The distribution coefficient log D for this substance at pH 7 is estimated to be 0.55 (ACD Labs Log D Suite, v5.16). Therefore, at pH encountered in the environment, the substance will have very low potential for adsorption to organic matter of soils/sediments, or to bioaccumulate in aquatic organisms.
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