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Diss Factsheets
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EC number: 954-736-0 | 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)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
- Justification for type of information:
- Modelling to confirm low biodegradation rates is a common approach for polyolefins
The substance is a mix of liner C17 and branched C22 and each of the two key components were assessed.
The very low water solubility means that standard screening methods are not suitable. - Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Use of BIOWin model to cofnrim low rate of biodegradation
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Remarks:
- Model assumes non-adapted
- Duration of test (contact time):
- ca. 42 d
- Parameter followed for biodegradation estimation:
- DOC removal
- Reference substance:
- not required
- Parameter:
- probability of ready biodegradability (QSAR/QSPR)
- Remarks on result:
- not readily biodegradable based on QSAR/QSPR prediction
- Parameter:
- half-life in days (QSAR/QSPR)
- Value:
- ca. 29
- Remarks on result:
- readily biodegradable based on QSAR/QSPR prediction
- Details on results:
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.8432
Biowin2 (Non-Linear Model) : 0.9562
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.2334 (weeks )
Biowin4 (Primary Survey Model) : 4.0187 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7465
Biowin6 (MITI Non-Linear Model): 0.8899
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.4573
Ready Biodegradability Prediction: YES
Hydrocarbon Biodegradation (BioHCwin v1.01):
LOG BioHC Half-Life (days) : 1.4689
BioHC Half-Life (days) : 29.4350
Removal In Wastewater Treatment (recommended maximum 95%):
Total removal: 96.34 percent
Total biodegradation: 0.55 percent
Total sludge adsorption: 80.38 percent
Total to Air: 15.41 percent
(using 10000 hr Bio P,A,S)- Validity criteria fulfilled:
- yes
- Interpretation of results:
- inherently biodegradable, not fulfilling specific criteria
- Conclusions:
- In view of low water solubility (< 0.01 mg/l), screening testing is considered meaninless
Publications indicate ultimate biodegradation for linear and branched olefins and modelling confirms slow but ultimate degradation under aerobic conditions.
Hydrcarbons are not considered 'P' Persistent.
Reference
Description of key information
The very low solubility in water makes this type of screening test difficult to perform and most research considers longer term biodegradation.
The class of substance is accepted to be ultimately biodegradable in water and waste treatment systems, but this will be a slow process determined by the bioavailablity of the substance in water.
REF: Abbasian, F., Lockington, R., Mallavarapu, M. and Naidu, R., 2015. A comprehensive review of aliphatic hydrocarbon biodegradation by bacteria. Applied Biochemistry and Biotechnology, 176(3), 670-699.
Modelling applied:
Hydrocarbon Biodegradation (BioHCwin v1.01):
LOG BioHC Half-Life (days) : 1.4689
BioHC Half-Life (days) : 29.4350
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable, not fulfilling specific criteria
- Type of water:
- freshwater
Additional information
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.