tetraammine palladium (II) hydrogen carbonate

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

09 September 1996 - 15 November 1996

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Guideline study, conducted to GLP. Limited reporting detail.

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

(of Directive 92/69/EEC)

Deviations:

yes

Remarks:

The surface tension result was not corrected using the Harkins-Jordan correction table, as the correction is not applicable to the apparatus used. Reporting detail limited (e.g. missing information on purity).

Qualifier:

equivalent or similar to guideline

Guideline:

other: ISO 304 ring method.

Deviations:

not specified

Remarks:

Guideline not available for consultation and comparison

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Surface tension:

72.2 mN/m

Temp.:

21 °C

Conc.:

1 g/L

Remarks on result:

other: pH of sample solution: 8.69

Readings, times and temperatures of the sample solution.

Time (mins)	Reading (mN/m)	Temperature (deg C)
79	58.4	20.5
96	60.5	20.5
114	63.2	21.0
126	66.0	21.0
136	67.6	21.0
146	68.0	21.0
160	69.5	21.0
174	70.5	21.0
182	71.4	21.0
191	71.6	21.0
198	71.7	21.0
204	71.6	21.0
209	72.1	21.0
214	72.2	21.0
218	72.2	21.0
224	72.2	21.0

The surface tension was calculated as the mean of the last four readings (72.18 mN/m) x a calibration factor (1.001).

Conclusions:

In a guideline study, conducted to GLP, the surface tension of a 1 g/L solution of tetraamminepalladium(II) hydrogen carbonate was determined to be 72.2 mN/m at 21.0 deg C. As such, this compound is considered not to be surface active.

Executive summary:

In a guideline study, conducted to GLP, the surface tension of a 1 g/L solution of tetraamminepalladium(II) hydrogen carbonate was evaluated by the ring method. The surface tension was determined to be 72.2 mN/m at a temperature of 21.0 +/- 0.5 deg C. The pH of the sample solution was 8.69, at which negligible hydrolysis would have occurred. As such, this compound is considered not 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 tetraamminepalladium(II) hydrogen carbonate was evaluated by the ring method. The surface tension was determined to be 72.2 mN/m at a temperature of 21.0 +/- 0.5 deg C. The pH of the sample solution was 8.69, at which negligible hydrolysis would have occurred. As such, this compound is considered not to be surface active (Mullee and Bartlett, 1997).

Key value for chemical safety assessment

Surface tension:

72.2

in mN/m at 20°C and concentration in mg/L:

1 000