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Physical & Chemical properties

Water solubility

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Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: No GLP but other quality assurance
Cross-reference
Reason / purpose:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
GLP compliance:
no
Remarks:
other quality assurance
Type of method:
column elution method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Copper powder sample AK 0.1 to 0.2 µm, D50= 135 µm; oxygen : 0.3, C <0.01%

Results and discussion

Water solubility
Water solubility:
< 1 mg/L
Temp.:
30 °C
Remarks on result:
other: 14-16 days solubilization

Any other information on results incl. tables

Table3:Average water solubility of the sample 10TT02555 calculated from the 14-16 days shaking test.

 

 Sample code

10TT02555

 

 

Average or range

pH

 

6.34-7.56

ICP Al

mg/l

<0.2

ICP Bi

mg/l

<0.2

ICP Ca

mg/l

0.3

ICP Cu

mg/l

1.0

ICP P

mg/l

<0.5

ICP S

mg/l

<1

ICP Sn

mg/l

<0.2

ICP Zn

mg/l

<0.1


 

See "Liiipo_2010_Characterisation of copper powder.doc" attached to the summary record "physical and chemical properties"

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information): other: Cu° is insoluble, the test demonstrates poor solubility
Copper is a metals and as such insoluble. Copper needs to be oxidized to become soluble.
The solubility was still poor (<1 mg/L) even after after rigourous stirring for 14 -16 days.
Transformation/dissolution tests and bio-elution tests are more applicable to metals and are available from the section "environmental fate and pathways -additional environmental fate" and "toxicological information - toxico-kinetics"
Executive summary:

The water solubility test was done for the sample 10TT02555. The preliminary test did not indicate any solubility for the sample.Approximately 5 g sample and 100 ml water were taken to each test.

The shaking time was 14-16 days. The sample 10TT02555 was poorly soluble.