Registration Dossier

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:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Already evaluated by the Competent Authorities for Biocides and Existing Substance Regulations.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2003

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
flask method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
purity: 97%

Results and discussion

Water solubilityopen allclose all
Water solubility:
28.6 g/L
Temp.:
20 °C
pH:
4
Remarks on result:
other: Not realistically measureable. Test material neutralised acidic solutions - this solubility was achieved by continuous acidification.
Water solubility:
0.001 g/L
Temp.:
20 °C
pH:
> 6.5 - < 6.6
Water solubility:
0.001 g/L
Temp.:
20 °C
pH:
> 9.7 - < 9.8

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information): slightly soluble (0.1-100 mg/L) at ambient pHs (6.5 - 6.6)
At 20.0 ± 0.5ºC, copper (I) oxide was shown to be slightly soluble (0.639 mg/l) at ambient pHs of 6.5 – 6.6.
Executive summary:

All tests were carried out at 20.0 ± 0.5ºC. Under acidic conditions (pH 4) the test material neutralised acidic solutions a solubility of

28.6 g l-1was achieved by continuous acidification but this was not realistically measureable. Under ambient pHs (6.5 – 6.6) a solubility of

6.39 × 10-4g l-1was reported. Under basic conditions (pH 9.7 – 9.8) the solubility was reported to be <5.39 × 10-4g l-1.