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Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
30 March 2010 – 28 May 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: This study has been performed according to OECD and EC guidelines and according to GLP principles.

Data source

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

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
OECD harmonised ring method

Test material

Constituent 1
Reference substance name:
Vetiveria zizanioides, ext.
EC Number:
282-490-8
EC Name:
Vetiveria zizanioides, ext.
Cas Number:
84238-29-9
Molecular formula:
Not available due to the UVCB nature of the substance
IUPAC Name:
Essential oil of Vetiveria zizanioides (Poaceaes)
Details on test material:
- Name of test material (as cited in study report): Vetiveria zizanioides, ext.
- Substance type: Clear brown liquid
- Physical state: liquid
- Analytical purity: treated as 100% pure
- Lot/batch No.: ADL 53 901
- Expiration date of the lot/batch: 04 January 2011
- Stability under test conditions: stable
- Storage condition of test material: At room temperature in the dark
- Other: -

Results and discussion

Surface tension
Surface tension:
57.4 mN/m
Temp.:
20 °C
Conc.:
90 vol%

Any other information on results incl. tables

Table 3 Surface tension of the test substance

 

Test

Volume [μl]

Self-ignition temperature [°C]

Observations

Colour of the flame

Ignition delay [s]

1

70

70

200

300

-

-

-

2

70

70

200

300

Flame

Flame

orange/yellow

orange/yellow

14

14

 

Applicant's summary and conclusion

Conclusions:
The OECD harmonized ring method was used for the determination of the surface tension of Vetiveria zizanioides, ext.. The surface tension of a test solution at 90% of the test substance saturation solubility in water and at 20°C was 57.4 mN/m. According to this, the test substance is considered to be surface active.
Executive summary:

The OECD harmonized ring method was used for the determination of the surface tension of Vetiveria zizanioides, ext.. The surface tension of a test solution at 90% of the test substance saturation solubility in water and at 20°C was 57.4 mN/m. According to this, the test substance is considered to be surface active.

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