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EC number: 212-377-0 | CAS number: 811-97-2
- 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
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- supporting study
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Global ozone research and monitoring project, scientific assessment of stratospheric ozone.
- Author:
- WMO
- Year:
- 1 989
- Bibliographic source:
- Report 20, Volume II, Appendix: AFEAS Report. World Meteorological Association, Geneva, Switzerland.
- Reference Type:
- publication
- Title:
- Acid deposition in the United Kingdom 1986-1988.
- Author:
- UKRGAR
- Year:
- 1 990
- Bibliographic source:
- Third report of the United Kingdom Review Group on Acid Rain. United Kingdom Review Group on Acid Rain, Warren Spring Laboratory, Stevenage, UK.
- Reference Type:
- publication
- Title:
- Acid deposition: perspective in time and space.
- Author:
- Galloway JW
- Year:
- 1 995
- Bibliographic source:
- Water Air and Soil Pollution 85:15‑24.
Materials and methods
Test material
- Reference substance name:
- Norflurane
- EC Number:
- 212-377-0
- EC Name:
- Norflurane
- Cas Number:
- 811-97-2
- Molecular formula:
- C2H2F4
- IUPAC Name:
- 1,1,1,2-tetrafluoroethane
Constituent 1
Results and discussion
Applicant's summary and conclusion
- Executive summary:
Contribution to acid rain and environmental burden of fluoride ion On the basis of 15% conversion of HFC-134a to TFA and HF, 85% conversion to HCOOH, CO2 and HF, and uniform scavenging of the acids thus produced into the global average rainfall of 5 x 1011 kt/y, the calculated resulting levels of fluoride and acidity are low compared with those arising from existing sources: Assuming steady state conditions with an atmospheric release and degradation rate of 100 kt HFC-134a/y (equal to the expected releases in the early part of this century):
F– production would be 66 kt/y, i.e. very small compared with the estimated atmospheric fluoride flux of 1,000-8,000 kt/y (WMO, 1989).
The contribution of HFC-134a to the F– concentration in rainwater would be 0.12 ppbw . This level should be compared with typical fluoride concentrations in "background" rainwater of around 10 ppbw, i.e. 100 times greater, and with levels of about 1 ppmw (1 mg/l) used for the fluoridation of drinking water, i.e. 10,000 times greater (WMO, 1989).
The trifluoroacetic, formic and hydrofluoric acids formed from HFC-134a and scavenged in rainwater would represent an acidity of close to 4.46 x 109 mol H+/y, i.e. about 3,000 times less than the acidity arising from natural and anthropogenic emissions of SO2 and NOx (UKRGAR, 1990; Galloway, 1995). Thus the contribution of HFC-134a to acid rain would be negligible.
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