Registration Dossier
Registration Dossier
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EC number: 204-646-6 | CAS number: 123-72-8
Surface tension
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
- 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 substance name:
- Butyraldehyde
- EC Number:
- 204-646-6
- EC Name:
- Butyraldehyde
- Cas Number:
- 123-72-8
- Molecular formula:
- C4H8O
- IUPAC Name:
- butanal
- Test material form:
- liquid
- 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
Constituent 1
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.
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