Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2006-11-16
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Accepted well-documented technique which meets scientific principles The pendant drop method has been compared to the ring method OECD 115 and gave good correlation. See report no W09-2478.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
Pendant drop metohod (Perstorp AB) having good correlation with OECD 115
Principles of method if other than guideline:
A syringe was filled with approximately 10 ml of the solution and was attached to the instrument. The solution was mechanically expelled from the
syringe so that it formed a drop on the tip of the needle. This drop was examined optically by the software and 20 images were collected at a rate of 1 image every 3 seconds. The surface tension was calculated by the shape of the drop and the result is expressed as a mean value of the 20 images. Because the surface tension was above 60 mN/m, only one measurement was performed.
GLP compliance:
no
Type of method:
other: Pendant drop

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report: Polyol PX
- Physical state: solid
- Analytical purity: 71% GC-purity
- Impurities (identity and concentrations):
2-(hydroximethyl)-2-(methoxymethoxy) methyl)-1,3- Propanediol 10.8 %
Pentaerythritol 5.6 %
2-(5-(hydroxymethyl)-1,3-dioxan-2-yl)propane-1,3-diol 1.6 %
- Lot/batch No.: 381175857
- Stability under test conditions: good
- Storage condition of test material: room temperature

Results and discussion

Surface tension
Surface tension:
72 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Applicant's summary and conclusion

Conclusions:
Surface Tension : 72 mN/m at 20 ºC
Executive summary:

Surface Tension : 72 mN/m at 20 ºC