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Diss Factsheets

Physical & Chemical properties

Water solubility

Currently viewing:

Administrative data

Endpoint:
transformation / dissolution of metals and inorganic metal compounds
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Series on Testing and Assessment No. 29 (23-Jul-2001): Guidance document on transformation/dissolution of metals and metal compounds in aqueous media
GLP compliance:
not specified
Type of method:
other: Tdp testing

Test material

Constituent 1
Reference substance name:
Precipitate from tellurium containing acid solutions by copper metal cementation
EC Number:
943-528-5
Cas Number:
2415991-19-2
Molecular formula:
not applicable (UVCB)
IUPAC Name:
Precipitate from tellurium containing acid solutions by copper metal cementation
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

Results and discussion

Solubility of metal ions in aqueous mediaopen allclose all
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
2.08 µg/L
Element analysed:
As
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 6
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Element analysed:
Ag and Pb
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 6
Remarks on result:
other: no measurable release of silver and lead
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
987 µg/L
Element analysed:
Cu
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 6
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
25.7 µg/L
Element analysed:
Ni
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 6
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
2.81 µg/L
Element analysed:
Se
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 6
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
122 µg/L
Element analysed:
Te
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 6
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
0.05 µg/L
Element analysed:
Ag
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 8
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
1.19 µg/L
Element analysed:
As
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 8
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
375 µg/L
Element analysed:
Cu
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 8
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
21 µg/L
Element analysed:
Ni
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 8
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
1.16 µg/L
Element analysed:
Se
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 8
Type of test:
screening transformation/dissolution test - sparingly soluble metal compounds
Mean dissolved conc.:
13.4 µg/L
Element analysed:
Te
Loading of aqueous phase:
100 mg/L
Incubation duration:
24 h
Test conditions:
pH = 8

Applicant's summary and conclusion

Conclusions:
The pH-dependent extent of dissolution of Copper telluride was tested in standard aqueous solutions at pH 6 (0.5 % CO2-buffering) and pH 8 (air-buffering) for 24 hours at an agitation speed of 100 revolutions per minute (rpm). The extent of the transformation/dissolution was measured as the dissolved silver, arsenic, copper, nickel, lead, selenium and tellurium concentrations obtained after 24 hours. The results are detailed above.
Executive summary:

The pH-dependent extent of dissolution of Copper telluride was tested in standard aqueous solutions at pH 6 (0.5 % CO2-buffering) and pH 8 (air-buffering) for 24 hours at an agitation speed of 100 revolutions per minute (rpm). The extent of the transformation/dissolution was measured as the dissolved silver, arsenic, copper, nickel, lead, selenium and tellurium concentrations obtained after 24 hours. The results are detailed above.