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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Apr 28, 2017 - Aug 22, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
yes
Type of method:
ring method
Key result
Surface tension:
65.14 mN/m
Temp.:
20 °C
Conc.:
1 g/L

TABLE 1: Calibration Data and Correction Factor

 

Replication

Literature Value (so) of Surface Tension of Water (at 20 °C)

[mN/m]

Force (sg) required to Detach the Ring from the Surface of the Water (at 20 °C)

[mN/m]

Correction Factor

Φb=so/sg

R1

72.75

70.5

1.03

R2

70.4

1.03

R3

71.0

1.02

R4

70.6

1.03

R5

70.4

1.03

Mean

1.03

Standard Deviation

0.004

TABLE 2: Calculation of Surface Tension

 

Replication

Force (F) Required to Detach the Ring from the Surface of the Sample Solution

(at 20 °C)

[mN/m ]

Correction Factor*

Φb

Corrected Surface Tension at 20 °C

s= Φbx F

[mN/m]

R1

63.2

1.03

65.10

R2

63.0

64.89

R3

63.4

65.30

R4

63.5

65.41

R5

63.1

64.99

Mean

65.14

Standard Deviation

0.22

* TABLE 1

Conclusions:
The mean surface tension of 1 g/L aqueous solution of FRET 12-0492 measured after 10 minutes of its preparation was 65.14 ± 0.38 mN/m at 20 °C.
Executive summary:

The mean surface tension of 1 g/L aqueous solution of FRET 12-0492 measured after 10 minutes of its preparation was 65.14 ± 0.38 mN/m at 20 °C.

Description of key information

The mean surface tension of 1 g/L aqueous solution of FRET 12-0492 measured after 10 minutes of its preparation was 65.14 ± 0.38 mN/m at 20 °C.

Key value for chemical safety assessment

Surface tension:
65.14
in mN/m at 20°C and concentration in mg/L:
1

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