Registration Dossier
Registration Dossier
Diss Factsheets
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EC number: 200-262-8 | CAS number: 56-23-5
- 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
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
The atmospheric lifetime of CTC is estimated to be 34 years.
Key value for chemical safety assessment
- Half-life in air:
- 34 yr
Additional information
CTC is susceptible towards indirect photolysis by hydroxyl radicals in the troposphere (its estimated tropospheric half-life exceeds 330 years). Ultimately it diffuses upward into the stratosphere where it may be photodegraded (185-225 nm) to form the trichloromethyl radical and chlorine atoms.
Direct photolysis under stratospheric conditions is very efficient and the DT50 values range in the order of minutes. However the migration time to the troposphere is very long and the migration time limits the dissipation. On the other hand the direct photolysis of CTC is involved in global warming by ozone depletion.The rate of photodissociation begins to become important at altitudes >20 km, and increases as altitude increases. Estimates of the atmospheric lifetime (the overall persistence of CTC in the troposphere and the stratosphere combined) range from 30 to 100 years, with 34 +/- 5 years being the most recently refined value.
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