Tetraamminepalladium(2+) dihydroxide

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.6 (Water Solubility)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

flask method

Remarks on result:

not determinable

Remarks:

As the test item is not stable in water at the concentration used, the water solubility was not determinable.

Details on results:

At the beginning of all experiments, the solutions appeared homogeneous and slightly yellow without precipitate. After equilibration time, no precipitate was observed in the flasks of the 24 h experiment and the blank experiment. In the flasks of the 48 h experiment and the 72 h experiment, a black precipitate was found.

The test item is a complex compound. Regarding the behaviour of the test item, it can be assumed that this complex compound is not stable in water at the concentration used. As the test item was dissolved completely at the beginning of the stirring time, no further analytical determination was performed.

Table 1: Water solubility experiments of the test item

Experiment	24 h experiment	48 h experiment	72 h experiment	Blank experiment (72 h)
Amount of test item / g	5.01	5.01	5.01	--
Amount of demineralized water / mL	5	5	5	5
Stirring time at 30°C / h	24	48	72	72
pH at 24 - 25°C	13.0	13.0	13.0	6.7
Observation at the beginning of the stirring time	Homogeneous, slightly yellow solution	Homogeneous, slightly yellow solution	Homogeneous, slightly yellow solution	Colourless liquid
Observation after the stirring time	Homogeneous, slightly yellow solution	Slightly yellow solution with black precipitate	Slightly yellow solution with black precipitate	Colourless liquid
Water solubility / g/L	-	-	-	-

Conclusions:

The water solubility of tetraamminepalladium dihydroxide was not determinable as the test item was not stable in water.

Executive summary:

Winkler (2017) is a GLP-compliant study following OECD guideline 105 and EU method A6. It is considered suitable for use as the key study for this endpoint.

Description of key information

The water solubility of tetraamminepalladium dihydroxide was not determinable as the test item was not stable in water.

Additional information

Winkler (2017) is a GLP-compliant study following OECD guideline 105 and EU method A6. It is considered suitable for use as the key study for this endpoint.