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EC number: 471-480-0 | CAS number: 1645-83-6
- 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
Phototransformation in air
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in air
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The research was done at reputable laboratories and the results published in a peer reviewed journal
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- The products of Cl and OH radical initiated oxidation of trans-CF3CH=CHF were studied in a 700 Torr of N2/O2 diluent at 296 +/- 1K.
- GLP compliance:
- not specified
- Light source:
- other: fluorescent backlamps
- % Degr.:
- ca. 100
- Sampling time:
- 2 wk
- Conclusions:
- HFO-1234ze is removed by its reaction with OH in the air in 2 weeks. The atmospheric decomposition of HFO-1234ze is expected to have negligible environmental impact. The half-life of the test substance was not reported.
- Executive summary:
Hydroxyl radical initiated oxidation leads to the formation of CF3CHO and HC(O)F in yields which were indistinguishable from 100% and were not dependent on the O2 partial pressure. Chlorine atom initiated oxidation gives HC(O)F, CF3CHO, CF3C(O)Cl, and CF3C(O)CHFCl. The yields of CF3C(O)Cl and CF3C(O)CHFCl increased at the expense of HC(O)F and CF3CHO as the O2 partial pressure was increased over the range 5–700 Torr.
Long path length FTIR-smog chamber techniques were used to measure k(Cl + t-CF3CH=CHF) = (4.64 ± 0.59) x 10E-11cm3/molecule/sin, k(OH + t- CF3CH=CHF) = (9.25 ± 1.72)E-13cm3/molecule/sin, and k(O3 + t-CF3CH=CHF) = (2.81 ± 0.21)E-21 cm3/molecule/sin, 700 Torr of air diluent at 296 K. t-CF3CH=CHF has an integrated IR absorption cross section (650–2000/cm) of (1.94 ± 0.10)E-16 cm/molecule and a global warming potential of approximately 6 (100-year time horizon). As part of this work, the reaction of ozone with C2H4 was determined to proceed with a rate constant of (1.46 ± 0.13)E-18 cm3/molecule/sin 700 Torr of air at 296 K. The atmospheric lifetime of t-CF3CH=CHF is determined by its reaction with OH and is approximately two weeks. It is concluded that the atmospheric decomposition of HFO-1234ze is expected to have negligible environmental impact. The half life of the test substance was not reported.
Reference
Hydroxyl radical initiated oxidation leads to the formation of CF3CHO and HC(O)F in yields which were indistinguishable from 100% and were not dependent on the O2 partial pressure. Chlorine atom initiated oxidation gives HC(O)F, CF3CHO, CF3C(O)Cl, and CF3C(O)CHFCl. The yields of CF3C(O)Cl and CF3C(O)CHFCl increased at the expense of HC(O)F and CF3CHO as the O2 partial pressure was increased over the range 5–700 Torr.
Long path length FTIR-smog chamber techniques were used to measure k(Cl + t-CF3CH=CHF) = (4.64 ± 0.59) x 10E-11cm3/molecule/sin, k(OH + t- CF3CH=CHF) = (9.25 ± 1.72)E-13cm3/molecule/sin, and k(O3 + t-CF3CH=CHF) = (2.81 ± 0.21)E-21 cm3/molecule/sin, 700 Torr of air diluent at 296 K. The atmospheric lifetime of t-CF3CH=CHF is determined by its reaction with OH and is approximately two weeks. t-CF3CH=CHF has an integrated IR absorption cross section (650–2000 cm-1) of (1.94 ± 0.10)E-16 cm/molecule and a global warming potential of approximately 6 (100-year time horizon). As part of this work the reaction of ozone with C2H4 was determined to proceed with a rate constant of (1.46 ± 0.13)E-18 cm3 /molecule/sin 700 Torr of air at 296 K.
Description of key information
One publication on phototransformation in air was available and included here as a supporting study.
HFO-1234ze is removed by its reaction with OH in the air in 2 weeks. The atmospheric decomposition of HFO-1234ze is expected to have negligible environmental impact. The half-life of the test substance was not reported.
Key value for chemical safety assessment
Additional information
Hydroxyl radical initiated oxidation leads to the formation of CF3CHO and HC(O)F in yields which were indistinguishable from 100% and were not dependent on the O2 partial pressure. Chlorine atom initiated oxidation gives HC(O)F, CF3CHO, CF3C(O)Cl, and CF3C(O)CHFCl. The yields of CF3C(O)Cl and CF3C(O)CHFCl increased at the expense of HC(O)F and CF3CHO as the O2 partial pressure was increased over the range 5–700 Torr.
Long path length FTIR-smog chamber techniques were used to measure k(Cl + t-CF3CH=CHF) = (4.64 ± 0.59) x 10E-11cm3/molecule/sin, k(OH + t- CF3CH=CHF) = (9.25 ± 1.72)E-13cm3/molecule/sin, and k(O3 + t-CF3CH=CHF) = (2.81 ± 0.21)E-21 cm3/molecule/sin, 700 Torr of air diluent at 296 K. t-CF3CH=CHF has an integrated IR absorption cross section (650–2000/cm) of (1.94 ± 0.10)E-16 cm/molecule and a global warming potential of approximately 6 (100-year time horizon). As part of this work, the reaction of ozone with C2H4 was determined to proceed with a rate constant of (1.46 ± 0.13)E-18 cm3/molecule/sin 700 Torr of air at 296 K. The atmospheric lifetime of t-CF3CH=CHF is determined by its reaction with OH and is approximately two weeks. It is concluded that the atmospheric decomposition of HFO-1234ze will have negligible environmental impact. The half life of the test substance was not reported.
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