Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009-10-23
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 company report no W09-2478.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Principles of method if other than guideline:
Method: Pendant drop, Perstorp A1577 (correlates well to OECD 115), se company report no W09-2478.
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.
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): Capa™ 2043
- Substance type: organic
- Physical state: Liquid
- Analytical purity: Mixture(GC purity) 1,4-butandiol 1.7 % , 1,4-butandiol -1ECL 11.1 %, 1,4-butandiol -2ECL 21.6 %, 1,4-butandiol -3ECL 24.8 %, 1,4-butandiol -4ECL 20.6 %, 1,4-butandiol -5ECL 12.9 %, 1,4-butandiol -6ECL 5.9 %, 1,4-butandiol -7ECL 1.6 %
- Lot/batch No: WNI 342 27/1/09 WAC000378
- Stability under test conditions: good
- Storage condition of test material: room temperature

Results and discussion

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

Applicant's summary and conclusion

Conclusions:
Surface Tension: 53 mN/m at 20 ºC
Executive summary:

Surface Tension: 53 mN/m at 20 ºC