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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:
27 April 2006 - 04 May 2006
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study, conducted to GLP. No reporting of impurity identification.
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
yes
Remarks:
Limited reporting detail - missing information on impurity content
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
(of Directive 92/69/EEC)
Deviations:
yes
Remarks:
Limited reporting detail - missing information on impurity content
GLP compliance:
yes
Type of method:
ring method
Surface tension:
70.9 mN/m
Temp.:
20 °C
Conc.:
1 g/L

   First run  Second run
 Number of measurements  10  10
 Measurement 1  71.09  70.82
 Measurement 2  71.04  70.78
 Measurement 3  71.01  70.77
 Measurement 4  71.00  70.77
 Measurement 5  71.00  70.77
 Measurement 6  71.00  70.78
 Measurement 7  70.99  70.79
 Measurement 8  70.99  70.81
 Measurement 9  70.98  70.83
 Measurement 10  70.98  70.83
 Surface tension (mN/m) (mean of 10 measurements)  71.01  70.80
 Mean value     70.9 mN/m
Conclusions:
The surface tension of a 1 g/L solution of platinum(II) tetraammine diacetate was determined to be 70.9 mN/m at 20 deg C. The test substance is not considered to be surface active under the criteria described in the Test Method Regulation (EU 440/2008).
Executive summary:

In a guideline study, conducted to GLP, the surface tension of a 1 g/L solution of platinum(II) tetraammine diacetate was evaluated by the ring method. The surface tension was determined to be 70.9 mN/m at a temperature of 20 deg C. According to the criteria described in the Test Method Regulation (EU 440/2008, method A.5; a substance is surface active if its surface tension is < 60 mN/m). As such, platinum(II) tetraammine diacetate is not considered to be surface active.

Description of key information

In a guideline study, conducted to GLP, the surface tension of a 1 g/L solution of platinum(II) tetraammine diacetate was evaluated by the ring method. The surface tension was determined to be 70.9 mN/m at a temperature of 20 deg C (Mekelburger, 2006b). According to the criteria described in the Test Method Regulation (EU 440/2008, method A.5; a substance is surface active if its surface tension is < 60 mN/m). As such, platinum(II) tetraammine diacetate is not considered to be surface active.

Key value for chemical safety assessment

Surface tension:
70.9
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information