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Diss Factsheets
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EC number: 220-877-5 | CAS number: 2923-16-2
- 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
Phototransformation in air
Administrative data
- Endpoint:
- phototransformation in air
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- Not specified
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study not performed according to international guideline nor under GLP. However, the methodology is scientifically acceptable and the report is sufficiently well documented..
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 1 995
Materials and methods
- Principles of method if other than guideline:
- An investigationof the iron (a ubiquitous constituent of atmospheric drops) catalysed photodecarboxylation of haloacid compounds including TFANa was performed to help to determine if there are possible atmospheric reactions of these compounds. Aqueous solutions containing ferric ions and chloro- or fluoroacetates were photolyzed by light with wavelengths greater than 300 nm. In conjunction with monitoring the photolytic disappearrance of Fe(III)-halocetate spectrophotometrically, the concomittant decrease in the concentration of haloacetate was followed by anion chromatography. Another approach to determine the extent of haloacetate mineralization was used measuring the amount of CO2 formed.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Sodium trifluoroacetate
- EC Number:
- 220-879-6
- EC Name:
- Sodium trifluoroacetate
- Cas Number:
- 2923-18-4
- Molecular formula:
- C2HF3O2.Na
- IUPAC Name:
- sodium trifluoroacetate
- Details on test material:
- The test materials used were the purest grade available and NaTFA was obtained from Aldrich.
Constituent 1
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
See the endpoint study summary "Environmental fate and pathways" for the read-across justification.
Study design
- Light source:
- Xenon lamp
- Light spectrum: wavelength in nm:
- > 300
- Relative light intensity:
- 0
Results and discussion
% Degradation
- % Degr.:
- 0.92
- Sampling time:
- 42 min
- Test condition:
- 5 mmol/L TFA; 1.2 mmol/L Fe3+, Io=2E-7 eins.s-1.mL-1 at pH 4-5. Photolysis followed by monitoring of CO2. Further photolysis did not generate additional amount of carbon dioxide.
- Transformation products:
- yes
Identity of transformation products
- No.:
- #1
Reference
- Reference substance name:
- Unnamed
- IUPAC name:
- dioxomethane
- Inventory number:
- InventoryMultipleMappingImpl [inventoryEntryValue=EC 204-696-9]
- CAS number:
- 124-38-9
Any other information on results incl. tables
- Photolysis of TFA resulted in the formation of 92 µmol/L of CO2 after 42 min corresponding to 0.92%, but further photolysis did not generate additional amount of carbon dioxide.
- The rate of loss of TFA is lower than 1.
- Degradation of haloacetates can be due to direct photodecarboxylation or the photolytic generation of hydroxyl radicals.
- The rate of the reaction of OH with TFA is too slow to measure. This is in agreement with the relative inertness of TFA to ferric-assissted carbon photodecarboxylation.
- For all the haloacetates except TCA and TFA, the amount of halide formed, within the experimental error, quantitatively corresponded to the amount of the respective haloacetate mineralized.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- - Photolysis of TFA resulted in the formation of 92 µmol/L of CO2 after 42 min corresponding to 0.92% degradation, but further photolysis did not generate additional amount of carbon dioxide.
- The rate of loss of TFA is lower than 1.
- The rate of the reaction of OH with TFA is too slow to measure. - Executive summary:
Aqueous solutions containing ferric ions and chloro- or fluoroacetates were photolyzed by light with wavelengths greater than 300 nm. Significant variation in the extent of reaction was observed, with the totally halogenated acetates degraded very little in the course of the experiments. Photolysis of TFA resulted in the formation of 92 µmol/L of CO2 after 42 min corresponding to 0.92% degradation, but further photolysis did not generate additional amount of carbon dioxide. The rate of loss of TFA is lower than 1. Degradation of haloacetates can be due to direct photodecarboxylation or the photolytic generation of hydroxyl radicals. The rate of the reaction of OH with TFA is too slow to measure. This is in agreement with the relative inertness of TFA to ferric-assissted carbon photodecarboxylation. For all the haloacetates except TCA and TFA, the amount of halide formed, within the experimental error, quantitatively corresponded to the amount of the respective haloacetate mineralized.
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