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Surface tension

Link to relevant study record(s)

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

Guideline:

EU Method A.5 (Surface Tension)

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

GLP compliance:

yes (incl. QA statement)

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.

Key value for chemical safety assessment

Surface tension:

42.37

in mN/m at 20°C and concentration in mg/L:

1 000