Palladium dichloride

Water solubility

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP compliant, guideline study. Available as an unpublished report. Acceptable without restrictions.

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

GLP compliance:

yes (incl. QA statement)

Type of method:

flask method

Key result

Water solubility:

55.6 g/L

Conc. based on:

test mat.

Incubation duration:

24 h

Temp.:

20 °C

pH:

>= 1.2 - <= 1.6

Details on results:

prelim estimate of solubility was 15.3g/l as total dissolved palladium, equivalent to 25.5 g/l as palladium dichloride

Sample Number	Time Shaken at ˜ 30 °C(Hours)	Time Equilibrated at 20°C (hours)	Palladium Concentration (g/l)	solution pH
1	24	24	34.2	1.6
2	48	24	33.6	1.3
3	72	24	32.2	1.2

Mean palladium concentration 33.4g/l at 20.0 ± 0.5  °C

Equivalent palladium dichloride concentration: 55.6

g/l at 20.0 ± 0.5  °C

Conclusions:

The water solubility of Palladium dichloride has been determined to be 33.4 g/l of solution at 20.0 ± 0.5  °C monitoring the palladium concentration of the sample solutions; equivalent to a palladium dichloride solubility of 55.6 g/l at 20.0 ± 0.5  °C

Executive summary:

This is a GLP compliant, guideline study which is considered suitable for use as the key study for this endpoint. The water solubility of Palladium dichloride has been determined to be 33.4 g/l of solution at 20.0 ± 0.5  °C monitoring the palladium concentration of the sample solutions; equivalent to a palladium dichloride solubility of 55.6 g/l at 20.0 ± 0.5  °C

Reference 2

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Information from published review article in peer reviewed literature, minor restrictions in design and/or reporting but otherwise adequate for assessment.

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

GLP compliance:

not specified

Type of method:

flask method

Water solubility:

4.03 g/L

Temp.:

20 °C

pH:

2.2

Remarks on result:

other: +/-0.014 g/L

Details on results:

In some cases the PGM concentrations measured by ICP-OES showed a tendency of increasing values at each equilibration time. If the last two vessels varied by less than 15%, the test was deemed satisfactory. If the last two vessels varied by more than 15% then the analysis was repeated with longer equilibration times until the criteria was met.

Conclusions:

The water solubility of palladium (II) chloride was reported as 4.03 g/L at 20°C

Executive summary:

Information from published review article in peer reviewed literature, minor restrictions in design and/or reporting but otherwise adequate for assessment. The water solubility of palladium (II) chloride was reported as 4.03 g/L at 20°C.

Description of key information

The water solubility of palladium dichloride was determined to be 4.03 g/L at room temperature.

Key value for chemical safety assessment

Water solubility:

4.03 g/L

at the temperature of:

20 °C

Additional information

Gregory (2014) is a published article in peer reviewed literature. Water solubility was determined in a non-GLP, modified guideline study, and this is considered to be suitable for use as the key study for this endpoint. The water solubility of palladium dichloride was reported to be 4.03 g/L at 20°C.

O’Connor and Woolley (2011) also assessed the water solubility of palladium dichloride in a GLP compliant, guideline study. The water solubility of Palladium dichloride was determined to be 33.4 g/L of solution at 20.0 ± 0.5°C monitoring the palladium concentration of the sample solutions; equivalent to a palladium dichloride solubility of 55.6 g/l at 20.0 ± 0.5°C.