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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:
2010-04-19 to 2010-08-12
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
ring method
Specific details on test material used for the study:
- Trade name: Purasolv EL
- Batch number: 0909001195
- Appearance: Clear colourless liquid
- Purity: 99.83 % w/w
- Storage: at room temperature, in the dark under nitrogen
- Expiry date: 2010-09-14
Key result
Surface tension:
70.5 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Table 1. Surface tension of PURASOLV®EL (ethyl-S-lactate)

Measurement

Time passed [minutes]

Surface tension [mN/m]

individual

mean

Mean multiplied by Φband Harkins-Jordan corrected value

1

20

70.2

70.2

70.5

2

21

70.3

3

22

70.1

4

23

70.1

5

24

70.3

 

Conclusions:
The surface tension of a test solution at a ethyl (S)-lactate concentration of 1 g/L in water at 20 °C was 70.5 mN/m. The test substance is considered not to be surface active.
Executive summary:

The OECD harmonized ring method was used for determining the surface tension of PURASOLV®EL (ethyl-(S)-lactate). The surface tension of a test solution at a ethyl-(S)-lactate concentration of 1 g/L in water at 20 °C was 70.5 mN/m. The test substance is considered not to be surface active.

Description of key information

The OECD harmonized ring method was used for the determination of the surface tension of PURASOLV®EL (Ethyl (S)-lactate). The surface tension of a test solution at a Ethyl (S)-lactate concentration of 1 g/L in water at 20 °C was 70.5 mN/m. The test substance is therefore considered as not surface active.

Key value for chemical safety assessment

Surface tension:
70.5
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information