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Diss Factsheets
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EC number: 204-699-5 | CAS number: 124-41-4
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
Sodium methanolate is a white to yellowish organic solid salt that decomposes above 300 °C (OECD SIDS, 2006). Sodium methanolate has a calculated vapour pressure of 6.39 x 10-6 hPa (study director 2003). On contact with water the substance decomposes rapidly and exothermically under formation of methanol and sodium hydroxide (OECD SIDS, 2006). Due to the fast decomposition the hydrolysis products are relevant for the evaluation of the partitioning in the environmental compartments.
Sodium hydroxide
Sodium hydroxide is an inorganic salt that partitions
predominantly into the water phase and will not adsorb to particulate
matter or surfaces. The substance will further dissociate in water to
sodium and hydroxide ions and has no potential to bioaccumulate (OECD,
2002). Potential atmospheric emissions of NaOH are considered of no
concern since it is rapidly neutralized by carbon dioxide. Significant
emissions to the terrestrial environment are not expected. Terrestrial
emissions will be neutralized by the buffer capacity of the soil.
Methanol
If released to the environment methanol is readily
biodegradable (76 – 82% BOD-removal after 5 days). The log Pow of
methanol is -0.77, indicating a low bioaccumulation potential and low
potential for adsorption (study director, 2009). The low potential for
bioaccumulation was confirmed by experimental BCF-values of < 10 that
have been determined in different fish species (Freitag et al., 1985,
Gluth et al., 1985). Gaffney et al. (1987) published a Henry’s law
constant of 0.461 Pa m³/mol for methanol indicating a low potential for
volatilisation. If released to the air compartment, methanol will be
photodegraded by hydroxyl radicals with a half-life of 17 - 18 days
(Atkinson, 1989).
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.