Registration Dossier
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EC number: 200-741-1 | CAS number: 70-55-3
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:
- 05 january 2017 - 09 january 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- The OECD harmonized ring method was applied for the determination of the surface tension of p-toluenesulfonamide (PTSA). The surface tension of a test solution at a concentration of 1g/L and at 20 Degrees Celcius was 69.5 mN/m. According to this, the test item is considered not to be surface active.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- OECD harmonised ring method
- Specific details on test material used for the study:
- Test item 200961/B named: p-toluenesulfonamide (PTSA) which had an appearance as a white crystalline powder. The characterization of the test item supplied by the sponsor was conducted in an ISO 9001 environment.
- Key result
- Surface tension:
- 69.5 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The surface tension of p-toluene sulfonamide is 69.5 mN/m at a concentration of 1g/l and 20ºC.
- Executive summary:
The test item p-toluenesulfonamide has a surface tension of 69.5 mN/m at a concentration of 1 g/l and 20ºC according to the EC Guideline A.5 and OECD Guideline 115 .
Reference
| surface tension [mN/m] | |||
Measurement |
Time passed after transfer calibration solution to test vessel [min] |
individual |
mean |
1 |
14 |
73.3 |
|
| 2 | 15 | 74.5 | |
| 3 | 16 | 74.0 | 74.12 |
| 4 | 17 | 74.2 | |
| 5 | 18 | 74.1 | |
| 6 | 19 | 74.0 | |
| 7 | 20 | 74.3 | |
Description of key information
The OECD harmonized ring method was applied for the determination of the surface tension of p-toluenesulfonamide (PTSA). The surface tension of a test solution at a concentration of 1g/L and at 20 Degrees Celcius was 69.5 mN/m. According to this, the test item is considered not to be surface active.
Key value for chemical safety assessment
- Surface tension:
- 69.5
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
The OECD harmonized ring method was applied for the determination of the surface tension of p-toluenesulfonamide (PTSA). The surface tension of a test solution at a concentration of 1g/L and at 20 Degrees Celcius was 69.5 mN/m. According to this, the test item is considered not to be surface active.
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