Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2007-02-16
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Accepted well-documented technique which meets scientific principles Method Perstorp A1577 which correlates good with OECD 115, ring method Company report W09-2478

Data source

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

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
Perstorp A1577 gives eqivalent results
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.
Because the solubility of the substance is greater than 1 g/l, a solution of 1g/l was used to determine the surface tension
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): n-Butyraldehyde
- Substance type: organic
- Physical state: liquid
- Analytical purity: GC purity 99.7%
- Impurities (identity and concentrations): Iso-butyraldehyde: 0.05%, Butanoic acid: 0.10%
- Lot/batch No.: 605214

Results and discussion

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

Applicant's summary and conclusion

Conclusions:
Surface tension: 70 mN/m at 20 °C.
Executive summary:

Surface tension: 70 mN/m at 20 °C.