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EC number: 246-905-6 | CAS number: 25371-55-5
- 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
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
Under the conditions of this study no definitive experimental determination of the water solubility the test material could be made due to the surface active properties of the test material. Water solubility was determined to be less than 2.2 x10^-4 g/L by HPLC-MS however this is likely to be an over-estimate of the true water solubility of the test material. Estimates of the test materials individual components water solubility were generated using computer software; the water solubility for the three main components ranged from 1.22 x 10^-6 g/L to 2.25 x 10^-6 g/L.
Key value for chemical safety assessment
Additional information
The water solubility of the test material was investigated in accordance with the standardised guidelines OECD 105 under GLP conditions using high performance liquid chromatography (flask method).
The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
No definitive experimental determination was possible due to the surface active properties of the test material. Using a flask method based on Method 105 of the OECD Guidelines for the Testing of Chemicals, 27 July 1995, the water solubility was determined visually to be less than 9 x10^-4 g/L of solution at 20.0 ± 0.5 °C. By analysis of the solution resulting from this sample by HPLC-MS, monitoring the major component in the test material, the solubility was determined to be less than or equal to 2.2 x10^-4 g/L of solution at 20.0 ± 0.5 °C. However due to the readiness of the test material to form emulsions in water, the stability of these emulsions to centrifugation and the unsuitability of the filtration techniques for low concentration solutions of hydrophobic substances, it was concluded that the analytical result may continue to overestimate the true water solubility of the test material.
Using predictive fragment constant methodology software, WSKOWWIN, version 1.41, 2000 US Environmental Protection Agency, the water solubility of the individual components in the test material were estimated to be as follows: Dimethyl octadecylphosphonic acid 1.22 x10^-6 g/L, Mono-methyl octadecylphosphonic acid 1.66 x10^-6 and Octadecylphosphonic acid 2.25 x10^-6.
Under the conditions of this study no definitive experimental determination of the water solubility the test material could be made due to the surface active properties of the test material. Water solubility was determined to be less than 2.2 x10^-4 g/L by HPLC-MS however this is likely to be an over-estimate of the true water solubility of the test material.
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