Registration Dossier
Registration Dossier
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EC number: 277-616-3 | CAS number: 73816-74-7
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:
- 11 February - 1 March 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)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- OECD harmonised ring method
- Specific details on test material used for the study:
- STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: at dry and dark place between 5 - 30 degCelsius
- Stability under test conditions: stable
- Solubility and stability of the test substance in the solvent/vehicle: approx. 129 g/L in water - Key result
- Surface tension:
- 54.24 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The surface tension of a 1 g/L aqueous solution of the test item Reactive Red 45:1 was determined to be 54.24 mN/m (standard deviation +/- 0.05 mN/m) at 20 degC.
Considering that distilled water has a surface tension of 72.75 mN/m at 20 degC and the test item showed a surface tension below 60 mN/m under the conditions of this referring method, the test item should be regarded as being a surface-active material. - Executive summary:
The surface tension of a 1 g/L aqueous solution of the test item Reactive Red 45:1 was determined according to OECD Guideline No. 115 (1995) and Council Regulation (EC) No. 440/2008 Method A.5 with the OECD harmonized ring method.
The determination was carried out with a tensiometer in ten successive measurements with a standard deviation ≤0.05 mN/m at a temperature of 20 °C.
The surface tension of a 1 g/L aqueous solution of the test item Reactive Red 45:1 was determined to be: 54.24 mN/m(standard deviation ± 0.05mN/m) at 20 °C.
Considering that distilled water has a surface tension of 72.75 mN/m at 20 °C and the test item showed a surface tension below 60 mN/m under the conditions of this referring method, the test item should be regarded as being a surface-active material.
Reference
Description of key information
The surface tension of a 1 g/L aqueous solution of the test item Reactive Red 45:1 was determined to be 54.24 mN/m at 20°C.
Key value for chemical safety assessment
- Surface tension:
- 54.24
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
The surface tension of a 1 g/L aqueous solution of the test item Reactive Red 45:1 was determined to be 54.24 mN/m (standard deviation +/- 0.05 mN/m) at 20°C.
Considering that distilled water has a surface tension of 72.75 mN/m at 20°C and the test item showed a surface tension below 60 mN/m under the conditions of this referring method, the test item should be regarded as being a surface-active material.
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