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Diss Factsheets
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EC number: 270-737-2 | CAS number: 68477-54-3 A complex combination of organic compounds obtained by the distillation of products from a steam cracking process. It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly in the range of C8 through C12.
- 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://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_ecotoxicological-information.png)
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Marine water
- Hazard assessment conclusion:
- no data available: testing technically not feasible
STP
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (freshwater)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (marine water)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Ecotoxicity Labelling for Resin Oils and Cyclic Dienes Category
Experimental and QSAR data are available for several streams in the category. Data on the acute aquatic toxicity of 4 members of this category have been read across to the other category members. The studies were conducted to standard guidelines and according to GLP and so are considered reliable for use as key studies. We have used the results reported as WAF, which better represent the potential toxicity of the UVCB test substance itself. Similar sensitivities were shown in all three trophic levels. WAF data can be used for comparison with the criteria for environmental classification under the CLP Regulations. However, its use must be considered carefully. PETROTOX QSAR data was also considered for CLP, when no experimental data for a stream was available.
It is considered that based on the available experimental and PETROTOX QSAR data most streams in this category should have the classification of Chronic Category 2 (H411) under the CLP regulations. However, one stream should have a classification of Chronic Category 1 (H410) under the CLP regulations for having a predictedP. subcapitataErL10 below 0.1 mg/L. A total of three should also have a classification of Acute Category 1 (H400) under the CLP regulations, one of them for having acute experimental data from 2004 with EL50 forCeriodaphnia dubiaand LL50 forOncorhynchus mykissbelow 1 mg/L, and two of them for having a predicted Pseudokirchneriella subcapitata ErL50 value below 1 mg/L.
Conclusion
Based on the fraction of constituents in the tested sample and the available experimental and QSAR ecotoxicity data, streams in this category should have the classification of a) Chronic Category 2 (H411), or b) Acute Category 1 (H400) and Chronic Category 1 (H410) or c) Acute Category 1 (H400) and Chronic Category 2 (H411) under the CLP regulations.
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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