Registration Dossier
Registration Dossier
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EC number: 291-707-5 | CAS number: 90459-62-4
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: ISO Standard 304-1985, plate method
- Deviations:
- no
- Principles of method if other than guideline:
- The surfaee tension of a solution of surfaetant generally deereases with inereasing eoneentration until the CMC is aehieved. At higher eoneentration, the surfaee tension remains essentially unehanged. In agraph of the surfaee tension as afunetion of eoneentration, points form normally two straight lines with different slopes. The CMC is given by the interseetion of the two straight lines.
- GLP compliance:
- no
- Type of method:
- other: determination of critical micelle concentration using the plate method
Test material
- Reference substance name:
- Octadecanoic acid, reaction products with diethylenetriamine, di-Me sulfate-quaternized
- EC Number:
- 291-707-5
- EC Name:
- Octadecanoic acid, reaction products with diethylenetriamine, di-Me sulfate-quaternized
- Cas Number:
- 90459-62-4
- Molecular formula:
- C24H55N3O6S
- IUPAC Name:
- bis(2-aminoethyl)amine octadecanoic acid dimethyl sulfate
- Test material form:
- solid
- Remarks:
- paste
Constituent 1
Results and discussion
Water solubility
- Water solubility:
- 0.025 g/L
- Conc. based on:
- act. ingr.
- Incubation duration:
- 15 min
- Temp.:
- 20 °C
- pH:
- 6
Applicant's summary and conclusion
- Conclusions:
- CMC (water solubility) at 20°C in water: 0.025 ± 0.002 g/L
- Executive summary:
The water solubility of Octadecanoic acid, reaction products with diethylenetriamine, di-Me sulfate-quaternized was determined using the critical micelle concentration accordign to ISO 304 -1985 (plate method). According to the Guidance on information requirements and chemical safety assessment, chapter R.7a, since the substance was established to be a surfactant, it is prudent to take the critical micelle concentration (CMC) as a solubility limit.
The CMC (water solubility) at 20°C was determind to be 0.025 ±0.002 g/L, pH at 20°C: 6.0.
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