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Physical & Chemical properties

Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
November 2008 to January 2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
1995
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
2008
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected on 3-6 April 2007 / signed on 16 May 2007
Type of method:
OECD harmonised ring method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch number of test material: Givaudan Suisse SA / LDP0800001
- Expiration date of the lot/batch: 01 May 2010
- Physical appearance: Clear colourless liquid

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature in the dark
- Stability under storage conditions: Stable
Key result
Surface tension:
56.1 mN/m
Temp.:
20.2 °C
Conc.:
90 other: % saturation solubility

The results of the test on the determination of the surface tension of the test solution are given in table below.


 


Table 4.10/1: Surface tension of the test substance














































































Measurement



Time passed (minutes)



Surface tension (mN/m)



individual



mean



mean multiplied by fill ɸband Harkins-Jordan corrected value



1



23



52.2



55.4*



56.1



2



24



53.2



3



25



53.3



4



26



53.5



5



27



53.9



6



28



54.0



7



29



54.5



8



30



55.5



9



31



55.2



10



32



55.3



11



33



55.6



12



34



55.2



* Mean calculated from measurements 8 to 12, after equilibrium was reached.

Conclusions:
According to OECD Guideline 115 (Surface Tension of Aqueous Solutions) and EU Method A.5 (Surface Tension), using OECD harmonized ring method the surface tension of test item was determined. The surface tension of a test solution at 90% of the test substance saturation solubility in water and at 20.2 °C was 56.1 mN/m. According to this, the test substance is considered to be surface active.
Executive summary:

According to OECD Guideline 115 (Surface Tension of Aqueous Solutions) and EU Method A.5 (Surface Tension), using OECD harmonized ring method the surface tension of test item was determined. The surface tension of a test solution at 90% of the test substance saturation solubility in water and at 20.2 °C was 56.1 mN/m. According to this, the test substance is considered to be surface active.

Description of key information

The surface tension of a solution of test item (90% of the saturation concentration) was determined according to OECD 115 guideline, using the ring method. Surface tension was determined to be 56.1 mN/m.

Key value for chemical safety assessment

Surface tension:
56.1

Additional information

A reliable experimental study, conducted according to a recognized OECD/EC method and under GLP, is available. It is considered as a key study.