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Physical & Chemical properties

Water solubility

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Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
GLP compliance:
not specified
Type of method:
flask method
Remarks on result:
not determinable because of methodological limitations
Remarks:
Water solubility meant for pure substances
Details on results:
See table below

Experimentally determined average water solubility for the sample

 

 

Average or range

Measurement

Unit

 

pH

 

 7.16 – 7.46

ICP Al

mg/l

<0.2

ICP As

mg/l

<0.2

ICP Ba

mg/l

<0.2

ICP Bi

mg/l

<0.2

ICP Ca

mg/l

11

ICP Cd

mg/l

947

ICP Cu

mg/l

<0.1

ICP Fe

mg/l

<0.2

ICP Hg

mg/l

<0.2

ICP K

mg/l

<2

ICP Mg

mg/l

306

ICP Mn

mg/l

52

ICP Na

mg/l

26

ICP Ni

mg/l

0.6

ICP Pb

mg/l

<0.2

ICP S

mg/l

752

ICP Sb

mg/l

<0.2

ICP Se

mg/l

<0.2

ICP Si

mg/l

1.3

ICP Sn

mg/l

<0.2

ICP Ti

mg/l

<0.2

ICP Zn

mg/l

5.9

Conclusions:
Interpretation of results: insoluble (< 0.1 mg/L)
test done according to standard protocol. However, the solubility of the substance reflects the solubility of the pregnant liquor as the substance is considered insoluble. Moreover, occurence of small particles in the solution cannot be avoided which in turn may have an influence on the test result.
Executive summary:

Solubility of the substance was determined according to standard protocol. The sample did not indicate high solubility in the preliminary test. In the actual flask test the average solubilities of S and Zn were 1.14 and 1.67 g/L, respectively.

Description of key information

The flask test indicates a solubility in the g/l range for S and Zn.

However, the solubility of the substance reflects the solubility of the pregnant liquor as the substance is considered insoluble. Moreover, occurence of small particles in the solution cannot be avoided which in turn may have an influence on the test result.

Key value for chemical safety assessment

Additional information

Various types of leach residues were analyzed. They display differences in phys-chem. properties depending on their chemical composition. The most representative leach residue was used.