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EC number: 270-790-1 | CAS number: 68478-10-4 A complex combination of hydrocarbons obtained by the distillation of debenzenized light steam-cracked naphtha. It consists predominantly of cyclic olefinic and aromatic hydrocarbons having carbon numbers predominantly in the range of C8 through C16 and boiling in the range of approximately 130°C to 300°C (226°F to 572°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
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Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Toxicity to aquatic algae data are available for 2 streams within this Category. On the basis of loading rates, the 72 hour ErL50 ranged 1.3 -1.5 mg/L
(WAF) and the 96 hour ErL50 ranged 1.4 - 1.5 mg/L (WAF). The 72 hour NOELR ranged 0.46-0.47 mg/L (WAF) and the 96 hour NOELR ranged 0.47-1.1 mg/L (WAF). On the basis of measured concentrations, the 72 hour NOEC ranged 0.30-0.37 mg/L and the 96 hour NOEC ranged 0.30 - 0.94 mg/L.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 1.3 mg/L
- EC10 or NOEC for freshwater algae:
- 0.46 mg/L
Additional information
CAS No 68478-10-4 (ACC, 2004g): This is a GLP compliant guideline study considered adequate for assessment. The effects on growth rate (r) based upon actual loading rates for Dicyclopentadiene/Codimer Concentrate (DCPD/Codimer Concentrate) give a 72 hour ErL50 of 1.3 mg/L (WAF), a 96 hour ErL50 of 1.4 mg/L (WAF) and 72 and 96 hour NOELR of 0.47 mg/L (WAF). On the basis of measured concentrations, the 72 and 96 hour NOEC is 0.30 mg/L.
CAS No 68477-54-3 (ACC, 2004h): This is a GLP compliant, guideline study considered adequate for assessment. The effects on growth rate (r) based upon actual loading rates for Low Dicyclopentadiene Resin Oil (Low DCPD Resin Oil) gave a 72 and 96 hour ErL50 of 1.5 mg/L (WAF), a 72 hour NOELR of 0.46 mg/L (WAF) and a 96 hour NOELR of 1.1 mg/L (WAF). On the basis of measured concentrations, the 72 hour NOEC is 0.37 mg/L and the 96 hour NOEC is 0.94 mg/L.
The authors report results based 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.
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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