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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 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
12 Oct 2012
Deviations:
no
GLP compliance:
yes
Type of method:
ring method
Key result
Surface tension:
69.4 mN/m
Temp.:
20.2 °C
Conc.:
1.045 g/L

Run

Total Time
Elapsed from T0

(minutes)

Apparent Surface Tension

(Sa, dynes/cm)

Calibration Correction Factor

(Ccf)

Instrument Correction Factor

(F)

True Surface Tension

(S, dynes/cm)

 

 

 

 

 

 

Replicate No.:

1

Temperature (°C):

20.3

 

2

3

73.0

1.013

0.928

68.6

3

5

72.9

1.013

0.928

68.5

4

8

72.5

1.013

0.928

68.1

 

 

 

 

Mean

68.4

 

 

 

 

Std. Dev.

0.3

 

 

 

 

 

 

Replicate No.:

2

Temperature (°C):

20.1

 

2

3

73.9

1.013

0.929

69.5

3

5

74.6

1.013

0.930

70.2

4

7

72.5

1.013

0.928

68.1

 

 

 

 

Mean

69.3

 

 

 

 

Std. Dev.

1.08

 

 

 

 

 

 

Replicate No.:

3

Temperature (°C):

20.1

 

2

3

75.0

1.013

0.930

70.6

3

6

75.4

1.013

0.931

71.1

4

8

74.1

1.013

0.929

69.7

 

 

 

 

Mean

70.5

 

 

 

 

Std. Dev.

0.68

Overall Mean (dynes/cm = mN/m):

69.4

Temp Mean (°C):

20.2

 

 

Overall Std. Dev (dynes/cm = mN/m):

1.1

Temp Std Dev (°C):

0.1

 

 

CV:

1.6%

 

 

 

 

Conclusions:
The mean surface tension of three replicates was 69.4 ± 1.1 mN/m at 20.2 ± 0.1°C.
Executive summary:

According to OECD Test Guideline 115 the surface tension at 20.2 ± 0.1°C of the test item Hydrazine Carboximidamide, 2-[(2-hydroxyphenyl) methylene] – reaction products with 2-Undecanone was determined to be: 69.4 mN/m. According to Regulation EC No. 440/2008 Part A Method A.5. the test item is not regarded as a surface active material.

Description of key information

The mean surface tension of Hydrazine Carboximidamide, 2-((2-hydroxyphenyl)methylene)-, reaction products with 2 undecanone was 69.4 ± 1.1 mN/m at 20.2 ± 0.1°C.

Key value for chemical safety assessment

Surface tension:
69.4

Additional information

According to OECD Test Guideline 115 the surface tension at 20.2 ± 0.1°C of the test item Hydrazine Carboximidamide, 2-[(2-hydroxyphenyl) methylene] – reaction products with 2-Undecanone was determined to be: 69.4 mN/m. According to Regulation EC No. 440/2008 Part A Method A.5. the test item is not regarded as a surface active material.