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EC number: 931-740-0 | CAS number: -
- 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
The substance distillation residue, butyl alcohols production, rectification is a UVCB-substance composing of several not easily identifiable substances. Only one of the constituent, 2-ethylhexanol, can be analytically quantified (typical concentration range 20 -30 %).
Due to the complex composition of the substance there are a lot of technical difficulties related to the testing of environmental fate properties. The adsorption potential depends on the physical-chemical properties of the individual components. The different constituents have different physical-chemical properties (e.g. solubility, vapour pressure, octanol/water partition coefficient) that might have an effect on the overall transport and distribution of the substance in the environment. Because the composition of the substance is not easily identifiable, read-across method in order to evaluate the potential for adsorption was also regarded as an unsuitable approach. The need for further investigations of adsorption potential was evaluated based on the available experimental data on physical-chemical properties ((1) water solubility, (2) vapour pressure, (3) Kowpartition coefficient and (4) hydrolysis). In addition, (5) ready biodegradation screening test results were used to evaluate the potential for adsorption/desorption.
The available experimental physico-chemical data indicates that the substance might contain constituents having a potential for adsorption. (1) According to water solubility test, the substance is water soluble (1.8-9 g/L) but most probably also contains constituents having low solubility in water. However, some of the constituents are highly water soluble, and can be expected to be mobile in soil. (2) Based on the experimental data, the substance is non volatile at room temperature and partly volatile at temperature 35 degrees Celsius (7.9 kPa) and 50 degrees Celsius (19.4 kPa).
(3) Based on the experimental data on the octanol-water partition coefficient study (EC 444/2008), the substance might contain consituents having potential for adsorption. For complex mixtures (e.g. UVCBs) a single value of Kowwill not be definitive. The test results indicated peaks corresponding the constituents having log Kowvalues of 1.8 to 5.8, but also constituents corresponding the log Kowvalues of 6.4 up to 7.5. The range of log Kowvalues indicated that there might be constituents present in the mixture having potential for adsorption (log Kowvalues > 3). However, because of the complex and unknown composition, it was not possible to evaluate which were the minor constituents and which were the major constituents representing the measured log Kowvalues.
(4) The substance is hydrolytically stable and the half-life estimated by the preliminary study (OECD 111) at three pH-values is over one year. (5) The substance might contain partly biodegradable constituents. Based on the biodegradation screening test results in water, the substance was inherently biodegradable in water (OECD 301B). Some biodegradation occurred (biodeg-% 49.6) but the criteria for ready biodegradability was not fulfilled (failing 10 day-window).
Because there is no experimental data on the substance adsorption/desorption properties available, and the testing of this kind of complex mixture was considered unfeasible, the chemical safety assessment leans on the above existing experimental data on the physical-chemical and biodegradation studies of the substance. The possibility of the substance having potential for adsorption in soil or sediments cannot be neglected when considering the environmental fate and pathways of the substance.
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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