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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
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The lowest 3-h EL50 (EC50) was 670 mg/L, and the lowest EL0 (NOEC) was ca. 36 mg/L determined for creosote, a structure-related tar oil. This value is adopted for creosote oil, acenaphthene fraction (wash oil).
Key value for chemical safety assessment
- EC50 for microorganisms:
- 670 mg/L
- EC10 or NOEC for microorganisms:
- 36 mg/L
Additional information
No data about microbial inhibition is available for creosote oil, acenaphthene fraction (wash oil) itself. Instead, results obtained with creosote, a structure-related tar oil, are used for conclusion by analogy. Creosote is closely related to wash oil with major constituent the same as in wash oil. Small differences exist for the concentration of methylnaphthalenes (somewhat lower) and of phenanthrene to fluoranthene (somewhat higher) due to a slightly different distillation range (200 to 355°C for creosote compared to 210 to 300°C for wash oil). Nevertheless, toxicity to STP microorganisms is considered to be similar for both substances as range of constituents correspond closely. Results for creosote will be adopted to characterise the toxicity of wash oil to microorganisms.
A 3-h EC50 of 670 mg/L and a NOEC of ca. 36 mg/L were determined as EL50 and EL0 based on nominal concentration (loading). The values were obtained by measuring the respiration rate of activated sludge of a predominantly domestic sewage (Lebertz, 2002, Institut Fresenius, Germany).
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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