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Diss Factsheets
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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
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The study was carried out according to OECD guideline number 301B, and was conducted in compliance with the Principles of Good Laboratory Practice. A known concentration of the test substance and domestic activated sludge inoculum was aerated by CO2-free air at controlled flow rate in diffuse light conditions. Degradation was followed over 28 days determining the CO2 production in each test flask. Because the test substance is an UVCB- substance with unknown and variable composition, theoretical CO2 evolution was calculated based on the test substance concentrations (mass added into the test vessels) corresponding the TOC analysed from the test substance before initial biodegradation study. The biodegradation of the test substance was calculated and the overall degradation of the substance was evaluated from the graphical presentation in which the calculated biodegradation -% was plotted against time (days).
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable
Additional information
The substance is a UVCB-substance which is a by-product of butyl alcohol production by propylene oxosynthesis manufactured at petrochemical industry. According to the test results, the substance is inherently biodegradable. The biodegradation of the test substance within 28 days was 49.6 %. Test substance did not attain 60 % of degradation within 10 days. Test substance was biodegradable but failing the 10 days-window. There might be some uncertainties related to the biodegradation results. The differences in physico-chemical properties of the constituents in the substance (i.e. solubility, vapour pressure) might have an influence on the overall biodegradation of the mixture. The modified strum test (OECD 301B) was conducted for this substance because this test method is most commonly used for petroleum substances which are comparable with the test substance. This study is performed in open system where aeration was used. This prodecure might have an effect on maintaining substance concentration during testing. Aeration might have increased the volatilisation of some constituents resulting partial loss of some constituents from test media. This phenomenon was studied by determining the stability of the substance. In this stability test, TOC concentration of the mixture was decreased by 18 % compared to the initial TOC conc. of the mixture during 1.5 hours aeration. According to the recommendations of the test laboratory, it might be more appropriate to use a closed system in order to avoid partial evaporation during testing. However, other technical problems will then arise related to the analytical uncertainties, e.g. calculation of ThOD, which will be very complicated for this substance of unknown and variable composition. As a conclusion, the interpretation of the biodegradation of this substance is inherently biodegradable because this substance is a hydrocarbon UVCB similar to petroleum products.
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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