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Diss Factsheets

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
February 26 - 27, 1991
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP Study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1991
Report date:
1991

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
GLP compliance:
yes
Type of method:
ring method

Test material

Constituent 1
Chemical structure
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:
α-trimethylsilanyl-ω-trimethylsiloxypoly[oxy(methyl-3-(2-(2-methoxypropoxy)propoxy)propylsilanediyl]-co-oxy(dimethylsilane))
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

Results and discussion

Surface tension
Surface tension:
29 mN/m
Temp.:
20 °C

Any other information on results incl. tables

Determination of the calibration factor Fb is described in the Appendix of the attached study report. Table 2 in the report shows the individual measurements and the corrected surface tension of a solution of test substance in double-distilled water at a saturated concentration.

Applicant's summary and conclusion

Conclusions:
The surface tension of a saturated solution of DC 5067 in water was determined to be 29.0 mN/m. Based on the criteria as mentioned in the proposed updated version of the EEC guideline, it was concluded that DC 5067 should be regarded as a surface active material.
Executive summary:

The determination of the surface tension of an aqueous solution of DC 5067 was based on EEC-Directive A.5 5urface tensionn (1984), OECD Guideline no. 115 "Surface tension of aqueous solutions" (1981) and the proposed updated version of the EEC guideline (November 1989). The surface tension of a saturated solution of DC 5067 was determined to be 29.0 mN/m. Based on the criteria as mentioned in the proposed updated version of the EEC guideline, it was concluded that DC 5067 should be regarded as a surface active material. The temperature of measurement was 20.0 + 0.5°C.