Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well documented report of guideline study conducted according to GLP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report Date:
2007

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material: ATBS
- Physical state: white powder
- Analytical purity: 99.4 %
- Lot/batch No.: 061202
- Expiration date of the lot/batch: 30 june 2007
- Storage condition of test material: Room temperature in the dark
- Other: Date received: 18 January 2007

Results and discussion

Surface tension
Surface tension:
70.5 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Any other information on results incl. tables

            Surface Tension (mN/m)
      Measured     Calibration Corrected
  Time (minutes)  A  B A B
 0  71.0  71.0  71.0 71.0
  71.0  71.5    71.0  71.5  
10    71.5   71.5    71.5   71.5  
 15   71.5   71.5   71.5  71.5  
 20    71.0 71.0 71.0 71.0 
 25    71.0 71.0 71.0 71.0
 30    71.0 71.0 71.0   71.0 

Applicant's summary and conclusion

Conclusions:
The surface tension of a 1 g/L aqueous solution of ATBS was found to be 70.5 mN/m. As the result was greater than 60 mN/m, the test substance is not considered to be surface active.