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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:
04/07/2017-10/07/2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
GLP study run to current guidelines.
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:
Identification: Reaction product of 2,3-epoxypropyl neodecanoate and Benzenesulfonic acid, C10-13-sec-alkyl derivatives
Appearance/Physical state: Brown liquid
Batch: P718261998
Purity: 97.7%
Expiry date: 01 June 2018
Storage conditions: Room temperature in the dark
Key result
Surface tension:
35.4 mN/m
Temp.:
20.4 °C
Conc.:
90 other: % saturated solution

On removal from the 20 °C water bath, the samples were opaque, cloudy solutions. After filtration, the samples were clear, colorless solutions free from undissolved test item with no Tyndall beam effect observed.

Conclusions:
The aqueous surface tension was measured to be 35.4 mN/m (mean of duplicate analyses, 90% saturated solutions) at 20.4 ± 0.5 °C, using a ring method, designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be surface-active.
Executive summary:

The aqueous surface tension was measured to be 35.4 mN/m (mean of duplicate analyses, 90% saturated solutions) at 20.4 ± 0.5 °C, using a ring method, designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be surface-active.

Description of key information

The aqueous surface tension was measured to be 35.4 mN/m (mean of duplicate analyses, 90% saturated solutions) at 20.4 ± 0.5 °C, using a ring method, designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be surface-active.

Key value for chemical safety assessment

Surface tension:
35.4
in mN/m at 20°C and concentration in mg/L:
1 007.1

Additional information

The concentration above is calculated as the mean of two 90% saturated solutions of the test item and assumes no loss of test item after filtering.

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