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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:
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:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
yes (incl. certificate)
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

    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  
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 .

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.