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EC number: 247-556-2 | CAS number: 26264-05-1
- 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
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- Justification for type of information:
- The study was well conducted and critical micelle concentration (CMC) method was used as an alternative to the water solubility as more relevant for surface active substances.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- For surface active substances the critical micelle concentration (CMC) method is used as an alternative to the water solubility. The CMC is determined by measuring the surface tension of test substance solutions at different test substance concentrations. For surface active substances which form micelles in solution, the surface tension decreases with increasing concentration until the CMC is reached. At concentrations above the CMC, the surface tension remains constant. The CMC is determined from a plot of the surface tension versus the logarithm of the test substance concentration.
- GLP compliance:
- yes
- Type of method:
- other: CMC evaluation based on surface tension measurements
Test material
- Reference substance name:
- Dodecylbenzenesulphonic acid, compound with isopropylamine (1:1)
- EC Number:
- 247-556-2
- EC Name:
- Dodecylbenzenesulphonic acid, compound with isopropylamine (1:1)
- Cas Number:
- 26264-05-1
- Molecular formula:
- C18H30O3S.C3H9N
- IUPAC Name:
- sodium dodecylbenzenesulfonate
- Test material form:
- liquid
Constituent 1
Results and discussion
Water solubility
- Water solubility:
- 4 187 mg/L
- Conc. based on:
- other: CMC
- Temp.:
- 20 °C
- Remarks on result:
- other: pH: not determined Incubation duration: detailed as overnight Loading rate: 2000 to 20000 mg/L
- Details on results:
- Preliminary data:
According to the preliminary data, an estimated critical micelle concentration of >10000 mg/L was obtained.
Main study:
The CMC was determined from the intersection of the two trend lines y1 and y2. Trendline y1 was obtained using the data of the test solutions with test item concentrations of 10.1, 100.1, 2008.3 and 5040.8 mg/L. Trendline y2 was obtained from the mean surface tension of the test solutions with test item concentrations of 9976.6, 12000, 14956 and 20097 mg/L.
The intersection was calculated to be at a log C value of 3.62. It corresponded with a CMC of 4187 mg/L.
The water solubility value based on a visual assessment was > 20000 mg/L.
Applicant's summary and conclusion
- Conclusions:
- The CMC of the test item was determined by measuring the surface tension of test item solutions at different test item concentrations. The Critical Micelle Concentration (CMC) of the test substance is 4187 mg/L.
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