Aluminium, compound with nickel (1:1)

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)

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)

Remarks:

Landesamt für Umwelt-, Wasserwirtschaft und Gewerbeaufsicht, Rheinland-Pfalz

Type of method:

other: ICP-OES

Key result

Remarks on result:

other: No water solubiltiy could be determined due to the obvious chemical reaction of test item with water at three different pH values (4.04, 7.7 and 8.9)

Details on results:

The solubility of Aluminium compound with nickel (RANEY® 2813) in water was determined from the measured concentrations of aluminium and nickel in the filtrated test solutions with the nominal load of 50 g/L.
The first main test was aborted as all PE flasks were inflated after shaking at room temperature for 3 days. These data were not used for evaluation.
In the second main test the flasks were not tightly closed as the test item reacts with water by producing a gas. After 21 days of the measurement of the flasks 1A-C the test was aborted as the values varied from < 8.7 µg/L to 3636 µg/L Al and from < 10 µg/L to 3839 µg/L Ni. Furthermore, the reaction speed was different in each flask. The pH value in the flasks 1A-C was 7.6 -7.8.
In order to prove the reaction of the test item with water at pH 4 and 9 an additional test was performed. After 1 day, the test was aborted as both flasks were inflated due to the evolution of gas.
Therefore, the determination of the solubility of the test item in water is not possible as the test item reacts with water by producing a gas at three different pH values (4.0, 7.7 and 8.9). The test item is hydrolytically instable at a pH value of 4, 7, and 9.
No observations arousing doubts concerning the accuracy of the results and the validity of the study were made.

Conclusions:

Interpretation of results (migrated information): decomposes see Conclusions
Determination of the solubility of the test item in water is not possible as the test item reacts with water by producing a gas at three different pH values (4.0, 7.7 and 8.9).

Description of key information

Measuring of water solubility is not possible as item decomposes in water at three different pH values (4.0, 7.7 and 8.9).