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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
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
GLP compliance:
yes (incl. certificate)
Type of method:
OECD harmonised ring method
Specific details on test material used for the study:
Batch number : TROD7BB06
Key result
Surface tension:
42.37 mN/m
Temp.:
20 °C
Conc.:
1 g/L
Remarks on result:
other: mean value

The results of the test on the determination of the surface tension of the test solution are given inTable 4. The individual measurements were obtained with a coefficient of variation of< 0.2 mN/m. 

Table 4          
Surface Tension of the Test Item

Measurement

Time passed after measurement start
[seconds]

Surface tension
(mN/m)

individual σ

Harkins-Jordan corrected value

mean σ

 

1

36.51

42.53

42.37

2

60.85

42.41

 

3

87.23

42.32

 

4

112.05

42.29

 

5

136.79

42.27

 

Conclusions:
The OECD harmonized ring method was applied for the determination of the surface tension of Acetic acid, oxo-, sodium salt, reaction products with ethanolamine and phenol, sodium hydroxide and ferric chloride.
The surface tension of a test solution at a concentration of 1 g/L in water and at 20°C was 42.37 mN/m. According to this, the test item is considered to be surface active.
Executive summary:

The OECD harmonized ring method was applied for the determination of the surface tension ofAcetic acid, oxo-, sodium salt, reaction products with ethanolamine and phenol, sodium hydroxide and ferric chloride.

The surface tension of a test solution at a concentration of 1 g/L in water and at 20°C was 42.37 mN/m. According to this, the test item is considered to be surface active.

Description of key information

Key value for chemical safety assessment

Surface tension:
42.37
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information