Registration Dossier
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EC number: 201-052-9 | CAS number: 77-73-6
- 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

Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
In accordance with column 2 of REACH Annex VIII and IX, the adsorption/desorption study does not need to be conducted as based on the physico-chemical properties the substance can be expected to have a low potential for adsorption (the substance has a log octanol water partition coefficient less than 3). The calculated log Koc is 2.35 and the QSAR estimated log Koc is 2.74-3.18.
Key value for chemical safety assessment
- Koc at 20 °C:
- 1 514
Additional information
In accordance with column 2 of REACH Annex VIII and IX, the adsorption/desorption study does not need to be conducted as based on the physico-chemical properties the substance can be expected to have a low potential for adsorption (the substance has a log octanol water partition coefficient less than 3). The EU risk assessment for dicyclopentadiene stated a Log Pow of 2.78, using OECD TG 107, performed by MITI Japan (1977). The data was unavailable for review. The WHO ICSC (2005), which is considered a reliable source adequate for assessment, provides a Log Kow of 2.78.
However, as the value is used in other parts of the risk assessment, data on the log Koc has been included in the dossier. The Koc for DCPD has been calculated based on the log Kow using the Sabljic et al. (1995) method as set out in the Technical Guidance Document (ECB 2003). The calculated log Koc of DCPD is 2.35 based on a measured log Kow of 2.78.
The Koc of DCPD has been estimated using QSAR models (USEPA 2008). KOCWIN Program (v2.00) uses MCI (molecular connectivity index) and a series of group contribution factors to predict Koc. The log Koc of DCPD has been estimated using QSAR models to be 2.74 (kow method) and 3.18 (MCI method).
[LogKoc: 3.18]
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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