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Diss Factsheets
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EC number: 225-625-8 | CAS number: 4979-32-2
- 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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Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption, other
- Remarks:
- adsorption
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
- Justification for type of information:
- Calculated usind PCKOC Program v1.66 of EPI-Suite software as well as according to Sabljic (1995) and Gerstl (1990).
The calculation of PCKOC program is based upon the molecule structure using the molecular connectivity method.
The calculation according to Sabljic (1995, QASR Modelling of Soil Sorption. Improvements and Systematics of logKoc vs. logKow Correlations. Chemosphere, Vol. 31, pp. 4498-4514) is based on a statistical relationships between Koc and the octanol/water partition coefficient.
The calculation according to Gerstl (1990, Estimation of Organic Chemical Sorption by Soils, Journal of Contaminant Hydrology, 6, pp. 357-375) is based on a statistical relationships between Koc and the octanol/water partition coefficient. - Principles of method if other than guideline:
- Calculated usind PCKOC Program v1.66 of EPI-Suite software as well as according to Sabljic (1995) and Gerstl (1990).
The calculation of PCKOC program is based upon the molecule structure using the molecular connectivity method.
The calculation according to Sabljic (1995, QASR Modelling of Soil Sorption. Improvements and Systematics of logKoc vs. logKow Correlations. Chemosphere, Vol. 31, pp. 4498-4514) is based on a statistical relationships between Koc and the octanol/water partition coefficient.
The calculation according to Gerstl (1990, Estimation of Organic Chemical Sorption by Soils, Journal of Contaminant Hydrology, 6, pp. 357-375) is based on a statistical relationships between Koc and the octanol/water partition coefficient. - GLP compliance:
- no
- Type of method:
- other:
- Media:
- soil
- Radiolabelling:
- no
- Key result
- Sample No.:
- #1
- Phase system:
- soil-water
- Type:
- other: logKoc
- Value:
- 4.7
- Remarks on result:
- other:
- Remarks:
- Calculated result: pH and temperature not available.
- Key result
- Sample No.:
- #2
- Phase system:
- soil-water
- Type:
- other: logKoc
- Value:
- 4.92
- Remarks on result:
- other:
- Remarks:
- Calculated result: pH and temperature not available
- Conclusions:
- The estimated log Koc values for DCBS, using different accepted calculation methods are 4.70, 4.92 and 4.82 (Currenta, 2010). The lowest log Koc of 4.70 is used for further hazard assessment of DCBS in sediment and soil compartments as a worst case assumption
, such as PNEC calculation with EPM method. According to the classification scheme of Swann et al. (1983) the estimated log Koc-values are higher than 3.7, which indicates a very strong sorption potential to soil and sediment and suggests a slow migration potential to ground water. - Executive summary:
The estimated log Koc values for DCBS, using different accepted calculation methods are 4.70, 4.92 and 4.82 (Currenta, 2010). The lowest log Koc of 4.70 is used for further hazard assessment of DCBS in sediment and soil compartments as a worst case assumption
, such as PNEC calculation with EPM method. According to the classification scheme of Swann et al. (1983) the estimated log Koc-values are higher than 3.7, which indicates a very strong sorption potential to soil and sediment and suggests a slow migration potential to ground water.
Reference
logKoc | Calculation according to | Substance class | Equation | Input parameter (Reference) |
4.92 | Sabljic (1995) | predomonantly hydrophobics | logKoc = 0.81 logKow + 0.1 | logKow = 5.95 (Rorije, 1997) |
4.70 | Gerstl (1990) | all compounds | logKoc = 0.679 logKow + 0.663 | logKow = 5.95 (Rorije, 1997) |
4.82 | KOCWIN v2.00 | ./. | molecular connectivity method | ./. |
Description of key information
The estimated log Koc values for DCBS, using different accepted calculation
methods are 4.70, 4.92 and 4.82 (Currenta, 2010). The lowest log Koc of
4.70 is used for further hazard assessment of DCBS in sediment and soil
compartments as a worst case assumption, such as PNEC calculation with
EPM method.
The log Koc-values of the hydrolysis products of DCBS were 2.4-2.6 for
dicyclohexylamine from QSAR estimation (SIDS, 2006) and 2.51-3.55 for
MBT as experimental result (CMA, 1989), respectively.
Key value for chemical safety assessment
- Koc at 20 °C:
- 50 118
Additional information
According to the classification scheme of Swann et al. (1983) the estimated log Koc-values of DCBS are higher than 3.7, which indicates a very strong sorption potential to soil and sediment and suggests a slow migration potential to ground water. In contrast, as the hydrolysis products of DCBS dicyclohexylamine has a low sorption potential in soil and sediment compartment and MBT has a moderate sorption potential.
[LogKoc: 4.7]
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