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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:
2016.06.07 - 2016.06.07
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
NA
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
Principles of method if other than guideline:
NA
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: 151210177
- Expiration date of the lot/batch: 09 December 2016
- Purity: 95.49%
- Purity test date: 09 December 2016

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature, in the dark
Key result
Surface tension:
ca. 57.3 mN/m
Temp.:
20 °C
Conc.:
1 g/L

The readings of sample solutions were made five times within a period of 104 min.

Mean result sample 1 : 57.5 mN/m, pH: 6.37, 20.0ºC

Mean result sample 2 : 57.0 mN/m, pH: 6.34, 20.0ºC

Overall mean result : 57.3 mN/m, Overall test temperature : 20.0 ± 0.5 ºC

Conclusions:
Determination of the Surface Tension was performed in accordance to OECD 115 and Commission Regulation (EC) No 440/2008. The mean surface tension of duplicate solutions of Ethoxy ethoxy ethyl acrylate in water, prepared at a nominal concentration of 1.0 g/L, was determined to be 57.3 mN/m at 20.0 ± 0.5 °C. Ethoxy ethoxy ethyl acrylate was therefore considered to be surface active (< 60.0 mN/m).
Executive summary:

The mean surface tension of duplicate solutions of Ethoxy ethoxy ethyl acrylate CAS No. 7328-17-8 in water, prepared at a nominal concentration of 1.0 g/L, has been determined to be 57.3 mN/m at 20.0 ± 0.5 °C, using a procedure (the 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 the Testing of Chemicals, 27 July 1995. However, a platinum ring with a reduced circumference of 4 cm was used, whereas the guidelines specify 6 cm. Once calibrated, the balance and ring assembly used in this test gave a direct reading for surface tension that is within the required accuracy (± 0.5 mN/m). Hence, the reduced ring dimensions are not considered to affect the integrity of the test. According to the criteria as mentioned in the guidelines, substances showing a surface tension lower than 60 mN/m under the conditions of this method, should be regarded as being surface active. Therefore, Ethoxy ethoxy ethyl acrylate was therefore considered to be surface active.

Description of key information

Determination of the Surface Tension was performed in accordance to OECD 115 and Commission Regulation (EC) No 440/2008. The mean surface tension of duplicate solutions of Ethoxy ethoxy ethyl acrylate in water, prepared at a nominal concentration of 1.0 g/L, was determined to be 57.3 mN/m at 20.0 ± 0.5 °C. 2-Propenoic acid, 2-(2-ethoxyethoxy)ethylester (Ethoxy ethoxy ethyl acrylate) was therefore considered to be surface active (< 60.0 mN/m).

Key value for chemical safety assessment

Surface tension:
57.3
in mN/m at 20°C and concentration in mg/L:
1

Additional information