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EC number: 271-013-9 | CAS number: 68513-69-9 A complex residuum from the distillation of the products from a steam-cracking process. It consists predominantly of aromatic and unsaturated hydrocarbons having carbon numbers greater than C7 and boiling in the range of approximately 101°C to 555°C (214°F to 1030°F).
- 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
![](https://poisoncentres.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_ecotoxicological-information.png)
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Experimental data provided for this Category was generated via use of WAFs. Deriving PNEC’s for UVCB substances based on WAF information is inappropriate. PNECs were derived using the PETROTOX v.3.05 model.The hydrocarbon block method is used for environmental risk assessment (see REACH guidance, R7, app.13-1). PNECs for hydrocarbon blocks have been derived using the HC5 statistical extrapolation method and the target lipid model using representative structures. See Product Library tab in PETRORISK spreadsheet (Table B.3). Given the large database of organisms included in the target lipid model, an assessment factor of one has been applied to the HC5.
Conclusion on classification
Some ecotoxicology studies are available for this category. The most sensitive endpoint was a 96 hour LC50 for fish of 1mg/l WAF.
Ecotoxicity Labelling for Fuel Oils Category
Studies were conducted to standard guidelines and according to GLP and are considered reliable for use as key/supporting studies. The authors report the LC50 based both on nominal loading rates (WAF) and mean measured concentrations. As the test substance is a hydrocarbon stream with various components reporting a measured concentration could be misleading as the measured concentration does not relate to a concentration of the raw stream. Instead, we have used the results reported as WAF, which better represent the potential toxicity of the test substance. Similar sensitivity was seen over the three trophic levels. Fish had LL50 range of 1.1 to 32 mg/l; Invertebrates had EL50 range of 3.3 – 13 mg/l; Algae had ErL50 range 2.3-8.95mg/l.
WAF data can be used for comparison with the criteria for environmental classification under both the DSD and CLP Regulations. However, its use must be considered carefully. Based on the available data the most sensitive result from each taxa falls between 1 to 10 mg/l WAF. Therefore streams in this category should have the classification R51/53 under the DSD and Chronic Cat 2 under the CLP regulations.
The measured partition coefficients of four streams within this category have log Kow ranges from 3 and <6.5. Therefore, the classification cannot be removed.
Conclusion
Based on the available experimental data streams in this category should have the classification R51/53 under the DSD and Chronic 2 under the CLP regulations.
However, the classification of streams in this category may be impacted by other constituents. Components which may impact the classification (i.e. those that are R50/53) should be identified by the registrants and the impact of their environmental classification included in the assessment. The classification of each stream can be determined following the equations given in the notes below.
Note:
Under the DSD
R50/53 applies if sum of components with R50/53 is >25%.
R51/53 applies if sum of components with R51/53 is >25% or if sum of components with R50/53 is >2.5%.
R52/53 applies if sum of components with R52/53 is >25% or if sum of components with R51/53 is >2.5% or if sum of components with R50/53 is >0.25%.
Under the CLP Regulations
Acute 1 applies if sum of components with acute 1 is >25%.
Chronic 1 applies if sum of components with chronic 1 is >25%.
Chronic 2 applies if sum of components with chronic 1 multiplied by 10 plus the sum of components with chronic 2 is >25%.
Chronic 3 applies if sum of components with chronic 1 multiplied by 100 plus the sum of components with chronic 2 multiplied by 10 plus the sum of components with chronic 3 is >25%.
Chronic 4 applies is sum of components with chronic 1, 2, 3 and 4 is >25%.
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.
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