Registration Dossier
Registration Dossier
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EC number: 278-188-0 | CAS number: 75314-26-0
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 25 April - 03 August, 2017
- 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:
- 27th July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- May 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 51 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: ca. 200 mg / 200 ml
- Conclusions:
- The surface tension of Benzene, 1,1’-oxybis(methyl-, sulfonated, ammonium salt (ca 50%) aqueous solution (ca. 200 mg / 200 ml) was found to be 51.5, 50.2, 51.0, 49.8, 51.4 and 51.2 mN/m (resulting a mean value 51 mN/m) at 20 °C using the ring method.
As this value is lower than 60 mN/m, Benzene, 1,1’-oxybis(methyl-, sulfonated, ammonium salt (ca 50%) is classified as surface active. - Executive summary:
The free surface enthalpy per unit of surface area is referred to as surface tension.
The ring method is based on the measurement of the maximum force which is necessary to exert vertically on a ring, in contact with the surface of the liquid, in order to stretch the liquid film beneath the ring.The objective of this study was to determine the surface tension of the solution of the test item.
In the course of this study aqueous solution was prepared containing 1 g/L concentration of Benzene, 1,1’-oxybis(methyl-, sulfonated, ammonium salt (ca 50%). Surface tension of this solution was determined applying the ring method. The test was performed with the help of Krüss Easy Dyne type tensiometer.
The surface tension of Benzene, 1,1’-oxybis(methyl-, sulfonated, ammonium salt (ca 50%) aqueous solution (ca. 200 mg / 200 ml) was found to be51.5, 50.2, 51.0, 49.8, 51.4 and 51.2 mN/m (resulting a mean value 51 mN/m) atusing the ring method. As this value is lower than 60 mN/m, Benzene, 1,1’-oxybis(methyl-, sulfonated, ammonium salt (ca 50%) is classified as surface active.
Reference
The test item solution was held at constant temperature (20.0 ± 0.5 °C) in a temperature controlled room. The surface tension ofBenzene, 1,1’-oxybis(methyl-, sulfonated, ammonium salt (ca 50%)aqueous solution (ca. 200 mg / 200 ml) was found to be 51.5 (277 sec*), 50.2 (274 sec*), 51.0 (278 sec*), 49.8 (312 sec*), 51.4 (451 sec*) and 51.2 mN/m (491 sec*) (resulting a mean value 51 mN/m) atusing the ring method.
Description of key information
The test item solution was held at constant temperature (20.0 ± 0.5 °C) in a temperature controlled room. The surface tension of Benzene, 1,1’-oxybis(methyl-, sulfonated, ammonium salt (ca 50%) aqueous solution (ca. 200 mg / 200 ml) was found to be at a mean value of 51 mN/m at 20 °C using the ring method.
As this value is lower than 60 mN/m, Benzene, 1,1’-oxybis(methyl-, sulfonated, ammonium salt (ca 50%) is classified as surface active.
Key value for chemical safety assessment
- Surface tension:
- 51
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
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