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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Test material information:
Composition 1
Specific details on test material used for the study:
- Physical Appearance: Almost colourless to yellow-brown liquid
- Date of Expiry: 01-08-2018
- Storage Condition: Ambient (21 to 29°C)
Key result
Surface tension:
31.51 mN/m
Temp.:
20.2 °C
Conc.:
1 g/L

The instrument was calibrated with 0.3, 0.5 and 0.8 g of standard weights. The surface tensions of the standard weights were observed and recorded as 24.40, 40.60, and 65.80 mN/m, respectively. A calibration curve was drawn between the observed surface tension and the standard weights. The mean scaling factor was calculated to be 1.0020 with a RSD of 0.709%. The surface tension of water was observed and recorded as 72.80 and 72.60 mN/m for replicates R1 and R2, respectively. The literature value (72.72 mN/m) for the surface tension of water was divided by the measured surface tension of water. The mean water calibration correction factor was calculated to be 1.0003 with a RSD of 0.200%. The test item was analyzed in triplicate. The surface tension measurement was done within 30 minutes from the time of preparation. The surface tension of the test substance (1 g/L) was determined as 31.31, 31.51, and 31.71 mN/m for replicates R1, R2, and R3, respectively. The calculated mean surface tension of Dihydro Isojasmonate was determined as 31.51 mN/m with a RSD of 0.635% at 20.2°C.

Description of key information

The surface tension of the test substance is 31.51 mN/m at a concentration of 1 g/L and at a temperature of 20.2°C.

Key value for chemical safety assessment

Surface tension:
31.51
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information