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EC number: 268-074-9 | CAS number: 68002-61-9 This substance is identified by SDA Substance Name: C16-C18 and C18 unsaturated alkyl trimethyl ammonium chloride and SDA Reporting Number: 11-045-00.
- 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

Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- Guideline compliant water solubility and solubility in organic solvent studies were used for the calulation of Log Kow. Individual solubilities i.e., octanol solubility was divided by the value of water solubility/CMC and the Log of this value would correspond to Log Kow
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Principles of method if other than guideline:
- Since the test substance is a surface active material, the partition coefficient was determined by the estimation method using the n-octanol solubility of the test substance and the critical micelle concentration.
- GLP compliance:
- yes
- Type of method:
- other: estimated data (octanol solubility was divided by the value of water solubility/CMC and the Log of this value would correspond to Log Kow)
- Partition coefficient type:
- octanol-water
- Key result
- Type:
- Pow
- Partition coefficient:
- 2 428.6
- Temp.:
- 25 °C
- Remarks on result:
- other: calculated based on individual solubility
- Key result
- Type:
- log Pow
- Partition coefficient:
- 3.38
- Temp.:
- 25 °C
- Remarks on result:
- other: calculated based on individual solubility
- Details on results:
- Under the test conditions, the octanol solubility of the test substance was determined to be 340 g/L in 1-octanol.
Under the conditions of the study, the water solubility (critical micelle concentration) of the test substance was determined to be 0.14 g/L or 140 mg/L at 25°C.
The Pow, calculated as the quotient of the n-octanol- and critical micelle concentration, is 2428.6. It corresponds with a log Pow value of 3.38. - Conclusions:
- Under the study conditions, the partition coefficient (Pow) of the test substance was determined to be 2428.6 at 25°C. This corresponds to a log Pow value of 3.38.
- Executive summary:
The partition coefficient of the test substance, TMAC T (purity not specified) was determined using an estimation method involving the solubility in n-octanol and in water (CMC). For surface active substance the critical micelle concentration (CMC) was used as an alternative to the water solubility. The octanol solubility of the test substance was determined to be 340 g/L in 1-octanol and the water solubility (critical micelle concentration) of the test substance was determined to be 0.14 g/L or 140 mg/L at 25°C. Under the study conditions, the partition coefficient (Pow) of the test substance was determined to be 2428.6 at 25°C. This corresponds to a log Pow value of 3.38) (Akzo nobel, 2012).
Reference
See above results and discussion for details
Description of key information
The partition coefficient of the test substance was determined using an estimation method involving the solubility in n-octanol and in water (CMC) (Börjesson, 2012; Farnback, 2012).
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 3.38
- at the temperature of:
- 25 °C
Additional information
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