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Physical & Chemical properties

Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-3-28 to 2018-3-30
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
GLP compliance:
not specified
Type of method:
OECD harmonised ring method
Specific details on test material used for the study:
- Sample name: supplied as a name of ESA
- Chemical name: 1,3,2-Dioxathiolane, 2,2-dioxide
- Appearance: White powder
- Purity: 100%
Surface tension:
66.8 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Data

In order to calculate the surface tension, the value read in mN/m on the apparatus shall first be multiplied by the calibration factor, this yields a value which is only approximate and requires a correction. The surface tension can be calculated according to the following formula:

σ=f·F/(4πR)

where
F= the force measured on the dynamometer at the breakpoint of the film,
R= the radius of the ring (9.55mm)
f= the correction factor

Test report

The tensiometer was calibrated using pure water before sample test, the density of sample solution and the radius of the ring were input into the tensiometer and the correction factor M=f/(4πR) was achievedautomatically; Radius of the ring: R=9.55mm, Temperature of the solution:T=20, Concentration of the solution:C=1g/L.

Test report:

Calibration factor, M

Force reading,

mN

Arithmetic mean,mN/m

Corrected

Mean,mN/m

Result,mN/m

0.877

76.0

76.0

66.8

66.8

0.877

75.9

Let the sample solution stand for 4 h after prepared. Transfer the sample solution to themeasurement vessel and measure the surface tension, the error between two parallel results should be less than 2%.

Conclusions:
The mean surface tension of duplicate aqueous solutions of test item prepared at a 1g/L solution has been determined to be 66.8 mN/m at 20.0 °C.
Executive summary:

The mean surface tension of duplicate aqueous solutions of test item prepared at a 1g/L solution has been determined to be 66.8 mN/m at 20.0 °C.  

Description of key information

The mean surface tension of duplicate aqueous solutions of test item prepared at a 1g/L solution has been determined to be 66.8 mN/m at 20.0 °C.  

Key value for chemical safety assessment

Surface tension:
66.8
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information