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Diss Factsheets
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EC number: 200-817-4 | CAS number: 74-87-3
- 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 hydroxy radical atmospheric half-life is estimated to be approximately one year.
Key value for chemical safety assessment
Additional information
According to Atkinson (1989) and SRC AOPWIN (2009) the half life of chloromethane is 360 d and 310 d, respectively. According to SIDS (2004) the exact pathway for decomposition in the troposphere is not known; however, the ultimate degradation products would be HCL, CO and CO2 (Spence et al., 1976; Singh et al., 1982). The direct photolysis of chloromethane appears unimportant in the troposphere (Shold and Rebbert, 1978). Most of the HCl produced by tropospheric degradation of chloromethane will be removed via precipitation. HCl formed in the stratosphere probably plays some role in regulating stratospheric ozone, but the extent to which HCl is an active species; a temporary sink or permanent sink for chlorine is still being debated. A small amount of chloromethane may be removed with precipitation in the form of rain and/or snow, although this is not likely to be a significant atmospheric process. The stratospheric steady-state ozone depletion potential (ODP) of chloromethane has been determined to be 0.02 relative to CFC 11 (ODP=1) (Solomon et al., 1992; WMO, 1994; Fabian et al., 1996). The contribution of industrial chloromethane to the Global Warming is of no relevance since the current industrial emission rates of chloromethane is too low to contribute meaningfully to atmospheric greenhouse heating effects (Grossman et al., 1997). Greater than 99% of ambient air concentrations of chloromethane originate from natural sources (US EPA Toxic Release Inventory (TRI), 1998; SIDS 2004), primarily from the ocean (Fabian, 1986; Rasmussen et al., 1982; Singh et al., 1979; Yung et al., 1975).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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