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EC number: 406-420-4 | CAS number: 69430-40-6 DC 5067
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 10 April, 1991
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP Study
Cross-reference
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 991
- Report date:
- 1991
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- GLP compliance:
- yes
- Type of method:
- shake-flask method to: flask method
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- α-trimethylsilanyl-ω-trimethylsiloxypoly[oxy(methyl-3-(2-(2-methoxypropoxy)propoxy)propylsilanediyl]-co-oxy(dimethylsilane))
- EC Number:
- 406-420-4
- EC Name:
- α-trimethylsilanyl-ω-trimethylsiloxypoly[oxy(methyl-3-(2-(2-methoxypropoxy)propoxy)propylsilanediyl]-co-oxy(dimethylsilane))
- Cas Number:
- 69430-40-6
- Molecular formula:
- Unspecified example: C18.3H46.8O5.8Si4.1
- IUPAC Name:
- 2,2,4,4,6,12,15-heptamethyl-6-[(trimethylsilyl)oxy]-3,5,10,13,16-pentaoxa-2,4,6-trisilaheptadecane
- Details on test material:
- Identification: DC 5067
Description: Clear, light brown liquid
Lot Number: AB 090122
Purity: >99%
Storage conditions: In the original container at room temperature in the dark
Stability under storage conditions: Stab1e
Expiry date: December 1, 1991
Constituent 1
Results and discussion
Partition coefficientopen allclose all
- Type:
- Pow
- Partition coefficient:
- ca. 1 400
- Temp.:
- 20 °C
- pH:
- >= 6 - <= 8
- Type:
- Pow
- Partition coefficient:
- ca. 4 000 000
- Temp.:
- 20 °C
- pH:
- >= 6 - <= 8
Applicant's summary and conclusion
- Conclusions:
- The partition coefficient (Pow) of DC 5067 was estimated to be 1.4 x l0exp3 (log Pow=3. 1) and 4.0 x l0exp6 (log Pow < 6.6).
- Executive summary:
DC 5067 appeared to be a surface active substance (see RCC NOTOX report 048678) "Determination of the surface tension of DC 5067". The HPLC method as well as the flask-shaking method (see OECD guideline no. 107 and EEC directive L251) for the determination of the partition coefficient applies only to pure substances which are not surface active, therefore the main study was not performed. During the preliminary test, the partition coefficient (Pow) of DC 5067 was estimated to be between 1.4 x l03 (log Pow=3.1) and 4.0 x l06 (log Pow 6.6), as a quotient of the maximum solubility of the test substance in n-octanol and water.
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