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EC number: 292-605-3 | CAS number: 90640-84-9 A complex combination of hydrocarbons produced by the distillation of coal tar and boiling in the range of approximately 240°C to 280°C (464°F to 536°F). Composed primarily of acenaphthene, naphthalene and alkyl naphthalene.
- 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
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.002 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.11 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 1.6 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.72 mg/kg sediment dw
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.072 mg/kg sediment dw
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.15 mg/kg soil dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 7.2 mg/kg food
- Assessment factor:
- 90
Additional information
Wash oil (WO) is a liquid UVCB substance mainly consisting of 2- and 3-ring aromatic compounds, some 50 % of which composed of naphthalene (Naph) (~ 11 - 13 %), 2-methylnaphthalene (2 -MN) (~ 17 - 20 %), 1-methylnaphthalene (1 -MN) (~ 7 - 9 %) and acenaphthene (~ 13 - 15 %). These are expected to largely represent the physico-chemical and environmental properties of the tar oil.
For most endpoints (exceptions see below), no long-term toxicity data is available for WO itself. Therefore, acenaphthene (typically approx. 13 – 15 % in WO) is adopted as relevant marker to represent WO with a maximum marker concentration of 40 % (for justification see Chapter 7.1.).
The acenaphthene-specific PNECs have been transformed to WO-adjusted PNECs in order to compensate for emissions from WO other than from acenaphthene only Therefore, the maximum acenaphthene content (40 %) has been related to the identifiable fraction in WO (89 %), i.e. the marker-specific PNECs have been multiplied by 40/89 = 1/2.2 = 0.45 or divided by 2.2. The results are WO-adjusted PNECs, based on acenaphthene toxicity and WO composition.
Three PNECs, concerning 'intermittent release', 'STP' and 'soil', directly relate to either wash oil (WO) or a structure-related tar oil, here: creosote [CAS no. 8001-58-9]. They have been broken down to the marker level in order to assure that exposure (based on the marker) comply with the PNEC reference. For this purpose, the WO-based PNECs have been multiplied by the derived correction factor of 0.45.
Conclusion on classification
- according to Regulation (EC) No 1272/2008 amended by Regulation (EC) No 790/2009 with aquatic chronic 2, H411.
Based on acute toxicity data (the lowest LL50 < 10 mg/L), wash oil requires classification for environmental hazard
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