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EC number: 269-915-2 | CAS number: 68390-97-6 This substance is identified by SDA Substance Name: C16-C18 alkyl dimethyl amine and SDA Reporting Number: 19-040-00.
- 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)
- Endpoint:
- adsorption / desorption, other
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Study period:
- October 2022
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
- Justification for type of information:
- Full justification is given in the attached QMRF/QPRF.
- Guideline:
- other: ECHA Guidance on Information Requirements and Chemical Safety Assessment. Chapter R. 6: QSARs and grouping of chemicals
- Version / remarks:
- 2008
- Guideline:
- other: ECHA Practical guide How to use and report (Q)SARs
- Version / remarks:
- July 2016
- Principles of method if other than guideline:
- The adsorption potential is estimated based on the n-octanol-water partition coefficient for the neutral substance and the pKa, using the model by Franco and Trapp (2008) for ionisable organic chemicals. Full details on the model (including references), applicability domain issues, results and interpretation are provided in the attached QMRF/QPRF.
- Type of method:
- other: QSAR
- Media:
- soil
- Test temperature:
- 20 °C
- Computational methods:
- Full details are provided in the attached QMRF/QPRF.
- Type:
- log Koc
- Value:
- 4.4
- Temp.:
- 20 °C
- Matrix:
- Soil
- % Org. carbon:
- 0.02
- Remarks on result:
- other:
- Key result
- Phase system:
- other: solids-water in all environmental media
- Type:
- Kp
- Value:
- 500 L/kg
- Temp.:
- 20 °C
- Matrix:
- Sediment; suspended matter; STP
- Remarks on result:
- other: Adsorption does not correlate with the organic carbon (OC) fraction of the medium (QMRF/QPRF).
- Validity criteria fulfilled:
- yes
- Conclusions:
- Predicted organic carbon normalized adsorption coefficient for soil:
log Koc = 4.4
Predicted partition coefficient solids water (Kp; equivalent to Kd, distribution coefficient for adsorption) for different environmental media:
Kp (Kd) = 500 - Executive summary:
The organic carbon normalized adsorption coefficient for soil (Koc) is estimated using the model by Franco and Trapp (2008) for ionisable organic chemicals based on the n-octanol-water partition coefficient for the neutral substance and the pKa. Full details on the model (including references), applicability domain issues, results and interpretation are provided in the attached QMRF/QPRF.
The predicted log Koc for soil is for all DMA category members within the range of 4.38 to 4.40. Taking the accuracy of prediction into account, a rounded value of log Koc = 4.4 is used for all category members.
The partition coefficient solids water (Kp; equivalent to Kd, distribution coefficient for adsorption) derived from (unrounded) predicted log Koc values based on the EU default OC fraction in soil solids (0.02) is within the range of 477 to 506 L/kg. Taking the accuracy of prediction into account, a rounded value of Kp (Kd) = 500 is used for all category members.
As justified in detail in the attached QMRF/QPRF, this Kp (Kd) is appropriate to account for the solids adsorption of DMAs in all environmental media, i.e. soil, suspended matter, sediment, and the STP (raw sewage sludge, primary sludge, secondary sludge, effluent sewage sludge). The reason is that adsorption does not correlate with the organic carbon (OC) fraction of the medium.
All DMA category members are within the applicability domain of the model.
Reference
Full details on results are provided in the attached QMRF/QPRF.
The predicted log Koc for soil is for all DMA category members within the range of 4.38 to 4.40. Taking the accuracy of prediction into account, a rounded value of log Koc = 4.4 is used for all category members.
The partition coefficient solids water (Kp; equivalent to Kd, distribution coefficient for adsorption) derived from (unrounded) predicted log Koc values based on the EU default OC fraction in soil solids (0.02) is within the range of 477 to 506 L/kg. Taking the accuracy of prediction into account, a rounded value of Kp (Kd) = 500 is used for all category members.
As justified in detail in the attached QMRF/QPRF, this Kp (Kd) is appropriate to account for the solids adsorption of DMAs in all environmental media, i.e. soil, suspended matter, sediment, and the STP (raw sewage sludge, primary sludge, secondary sludge, effluent sewage sludge). The reason is that adsorption does not correlate with the organic carbon (OC) fraction of the medium.
All DMA category members are within the applicability domain of the model.
Description of key information
Predicted organic carbon normalized adsorption coefficient for soil:
log Koc = 4.4
Predicted partition coefficient solids water (Kp; equivalent to Kd, distribution coefficient for adsorption) for different environmental media:
Kp (Kd) = 500
Key value for chemical safety assessment
Other adsorption coefficients
- Type:
- log Kp (solids-water in effluent sewage sludge)
- Value in L/kg:
- 2.7
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in activated sewage sludge)
- Value in L/kg:
- 2.7
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in settled sewage sludge)
- Value in L/kg:
- 2.7
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in raw sewage sludge)
- Value in L/kg:
- 2.7
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in suspended matter)
- Value in L/kg:
- 2.7
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in sediment)
- Value in L/kg:
- 2.7
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in soil)
- Value in L/kg:
- 2.7
- at the temperature of:
- 20 °C
Additional information
The organic carbon normalized adsorption coefficient for soil (Koc) is estimated using the model by Franco and Trapp (2008) for ionisable organic chemicals based on the n-octanol-water partition coefficient for the neutral substance and the pKa. Full details on the model (including references), applicability domain issues, results and interpretation are provided in the attached QMRF/QPRF.
The predicted log Koc for soil is for all DMA category members within the range of 4.38 to 4.40. Taking the accuracy of prediction into account, a rounded value of log Koc = 4.4 is used for all category members.
The partition coefficient solids water (Kp; equivalent to Kd, distribution coefficient for adsorption) derived from (unrounded) predicted log Koc values based on the EU default OC fraction in soil solids (0.02) is within the range of 477 to 506 L/kg. Taking the accuracy of prediction into account, a rounded value of Kp (Kd) = 500 is used for all category members.
As justified in detail in the attached QMRF/QPRF, this Kp (Kd) is appropriate to account for the solids adsorption of DMAs in all environmental media, i.e. soil, suspended matter, sediment, and the STP (raw sewage sludge, primary sludge, secondary sludge, effluent sewage sludge). The reason is that adsorption does not correlate with the organic carbon (OC) fraction of the medium.
All DMA category members are within the applicability domain of the model.
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