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EC number: 638-747-5 | CAS number: 1228186-17-1
- 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
- Endpoint:
- adsorption / desorption, other
- Remarks:
- adsorption
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- 1983
- Reliability:
- 2 (reliable with restrictions)
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 1 983
Materials and methods
- Principles of method if other than guideline:
- Batch adsorption test
- GLP compliance:
- not specified
- Type of method:
- other: Adsorption was measured using a liquid scintillation counter
- Media:
- sediment
Test material
- Reference substance name:
- 14C-DODMAC
- IUPAC Name:
- 14C-DODMAC
- Reference substance name:
- Dimethyldioctadecylammonium chloride
- EC Number:
- 203-508-2
- EC Name:
- Dimethyldioctadecylammonium chloride
- Cas Number:
- 107-64-2
- Molecular formula:
- C38H80N.Cl
- IUPAC Name:
- N,N-dimethyl-N-octadecyloctadecan-1-aminium chloride
- Test material form:
- solid
- Details on test material:
- A commercially available mixture of unlabelled DODMAC had an average alkyl chainlength of ~C17.7. Chemical purity was > 95 %, as determined by TLC and HPLC. All other chemicals used in testing were reagent grade, obtained from commercial sources.
Constituent 1
Constituent 2
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
Not relevant - Radiolabelling:
- yes
Study design
- Test temperature:
- No details given
HPLC method
- Details on study design: HPLC method:
- Not relevant
Batch equilibrium or other method
- Analytical monitoring:
- yes
- Details on sampling:
- No details supplied
- Details on matrix:
- Collected from two rivers (Rapid creek, Rapid City, SD; Ohio River, Cincinnati, OH) at locations 0.5 to 1.0 mile below the discharge of municipal wastewater treatment treatment plants. The sites varied significantly in terms of hydrological/geological characteristics. Rapid creek is a slow-flowing mountain stream (mean discharge ~ 50 ft3/s) with a low wastewater dilution factor (~1:5-1:10), whereas the Ohio River is a rapidly flowing major river (mean discharge ~2000,000 ft3) with high wastewater dilution factor (>1:10,000). Sediment samples were analysed for cation exchange capacity (CEC), pH, particle distribution, organic carbon, and suspended solids levels by standard procedures. They were tested on a dry weight basis. Compartive data for the two river sediments and a standard EPA sediment (EPA 18) are given in Table 1.
- Details on test conditions:
- Mixtures of test chemical and sediment were placed into 220 ml beakers containing 150-200 ml of 0.01 M KCl buffer. the beakers were agitated on a rotary platform shaker at room temperature to maintain uniform solids suspensions and at various intervals aliquots were removed and centrifuged at 39,000 xg for 30 min to remove particulate matter. The amount of radioactivity in solution, or on the solids after combustion, was then quantitated b
- Computational methods:
- Csolids
C solids
K2 = ____________
C solution
where: Csolids = ug/g on the solids
Csolution = ug/ml in solution
Equation (1) is a modified form of the Freundlich isotherm
Csolids = KdCsolution l/n
which is generally used to model adsorption processes. the Kd value can be derived from equation 2 when n=1 and can be extrapolated to different sediments by normalising for the organic carbon content of the sediment.
Results and discussion
Partition coefficientsopen allclose all
- Phase system:
- other: Kd (sediment-water)
- Type:
- other: Kd (sediment-water)
- Value:
- 12 489 L/kg
- Remarks on result:
- other: EPA 18 sediment
- Phase system:
- other: Kd (sediment-water)
- Type:
- other: Kd (sediment-water)
- Value:
- 3 833
- Remarks on result:
- other: Ohio river sediment
- Phase system:
- other: Kd (sediment-water)
- Type:
- other: Kd (sediment-water)
- Value:
- 10 775
- Remarks on result:
- other: Rapid creek sediment
Results: HPLC method
- Details on results (HPLC method):
- Not relevant
Results: Batch equilibrium or other method
- Adsorption and desorption constants:
- No details given
- Recovery of test material:
- No details given
- Concentration of test substance at end of adsorption equilibration period:
- No details given
- Concentration of test substance at end of desorption equilibration period:
- No details given
- Transformation products:
- not specified
- Statistics:
- No details given
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- See Excutive summary below
- Executive summary:
The sorption of DODMAC was investigated with 3 different sediments resulting in the Kd values of 3833, 10775 and 12489 L/kg.. For the EU Risk Assessment a Kd sediment of 10000 L/kg was assumed for the sediment/water partitioning of DODMAC. When assuming a suspended matter concentration of 15 mg/L in an STP effluent a Kd susp. matter of 16800 L/kg can be calculated from these data. As no measured data for the adsorption to soil is available the Kd sediment was used for Kd soil as well in the EU Risk Assessment (Kd soil 10000 L/kg).
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