Registration Dossier

Physical & Chemical properties

Surface tension

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-06-04 to 2018-06-10
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
GLP compliance:
no
Type of method:
OECD harmonised ring method
Key result
Surface tension:
16.2 mN/m
Temp.:
20 °C
Conc.:
1 032 mg/L

Surface tension

Measurement

1

2

3

4

5

6

Time (s)

12

132

252

372

494

616

(mN/m) uncorrected

18.93

18.89

18.90

18.90

18.90

18.92

(mN/m) corrected according
to Zuidema and Waters

16.25

16.21

16.22

16.22

16.22

16.23

 

Mean value: cr = 16.2 mN/m (corrected according to Zuidema and Waters )

The aqueous solution of the test item had a mean surface tension of 16.2 mN/m. As the surface tension was lower 60 mN/m, the test item had surface-active properties.

Conclusions:
The surface tension of the aqueous solution at 20 °C had a mean value of 16.2 mN/m. The test item had surface-active properties.
Executive summary:

A study was conducted according to OECD TG 115, Regulation (EC) No 440/2005 Part A, A.5, to determine the surface tension of an aqueous solution of the test item using the ring method. Therefore An aqueous solution of the test item in demineralized water with a concentration of 1032 mg/L was prepared and stirred for approx. 6 d. After adapting to 20 °C for 6 hours the measurement of the surface tension with the test item was carried out at 20 ± 0.5°C (20.2 °C). The measurements were repeated until 6 measurements were within the limits of the stability criterion. The surface tension of the aqueous solution at 20 °C and 1032 mg/L had a mean value of 16.2 mN/m. Thus, as the surface tension was lower 60 mN/m the test item had surface-active properties.

Description of key information

The surface tension of the aqueous solution at 20 °C had a mean value of 16.2 mN/m. The test item had surface-active properties (reference 4.10-1).

Key value for chemical safety assessment

Surface tension:
16.2
in mN/m at 20°C and concentration in mg/L:
1 032

Additional information

A study was conducted according to OECD TG 115, Regulation (EC) No 440/2005 Part A, A.5, to determine the surface tension of an aqueous solution of the test item using the ring method (reference 4.10-1). Therefore, an aqueous solution of the test item in demineralized water with a concentration of 1032 mg/L was prepared and stirred for approx. 6 d. After adapting to 20 °C for 6 hours the measurement of the surface tension with the test item was carried out at 20 ± 0.5°C (20.2 °C). The measurements were repeated until 6 measurements were within the limits of the stability criterion. The surface tension of the aqueous solution at 20 °C and 1032 mg/L had a mean value of 16.2 mN/m. Thus, as the surface tension was lower 60 mN/m the test item had surface-active properties.