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Diss Factsheets
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EC number: 200-467-2 | CAS number: 60-29-7
- 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
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Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
t1/2 = 9.8 hours or 0.82 days (12h daylight) at 298 K
Key value for chemical safety assessment
- Half-life in air:
- 0.82 d
Additional information
Wallington (1991) investigated the atmospheric fate of diethyl ether, particularly by reaction with hydroxyl radicals, after concluding that rates of photolysis, and reaction with ozone and NO3 radicals, were negligibly slow. The experimentally identified degradation products, after hydroxyl radical attack, were primarily ethyl formate (92 ±6%) with some formaldehyde.
The reaction rate of the hydroxyl radical with diethyl ether was experimentally determined by Atkinson (1989) to be kOH = 1.33x10^-11 cm3/molecule/s. Other reported values vary by about 10% (Handbook of Physical-Chemical Properties and Environmental Fate for Organic Chemicals, Vol. III, Oxygen Containing Compounds, 2nd Ed., 2006, CRC Press, p2267 - 8).
Using the equations and default hydroxyl concentration values (Atkinson, R., etal, Environ. Sci. Technol., 1990, 24, 1326 - 1332) presented in AOPWIN v1.92 (US EPA, EPISuite, v4.0), the half-life in the troposphere can be estimated:
t1/2 = 0.693 / kOH . [OH], where kOH = 1.33x10^-11 cm3/molecule/s and [OH] = 1.5x10^6 radicals/cm3/12h daylight.
t1/2 = 0.693 / 1.33x10^-11 . 1.5x10^6
t1/2 = 9.8 hours or 0.82 days (12h daylight) at 298 K
AOPWIN was not used itself for the above half-life calculation (although the result is the essentially the same: t1/2 = 10.4 h), because it's primary use is as a QSAR for the generation of unknown reaction rate constants. As an experimental value is available, this was used instead.
The available experimental data and calculated half-life indicate rapid hydroxyl-radical degradation of diethyl ether in the atmosphere, to form ethyl formate.
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