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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
Study period:
2010-04-09 to 2010-04-27
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
adopted 1995-07-27
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
signed 2007-05-23
Type of method:
flask method
Water solubility:
7 600 mg/L
Temp.:
8.9 °C
pH:
4.29
Remarks on result:
other: The pH of the bidistilled water free from oxygen and carbon dioxide was: 8.91 at 8.9 °C
Water solubility:
10 000 mg/L
Temp.:
19.9 °C
pH:
4.16
Remarks on result:
other: The pH of the bidistilled water free from oxygen and carbon dioxide was: 8.84 at 19.9 °C
Water solubility:
12 560 mg/L
Temp.:
31.9 °C
pH:
4.1
Remarks on result:
other: The pH of the bidistilled water free from oxygen and carbon dioxide was: 8.82 at 32 °C
Details on results:
The saturation concentrations were plotted versus temperature. Please see the plot under "Attached background material" below.
The plot indicates a positive linear relation of solubility and temperature. The temperature dependency was calculated from the slope of linear approximation between 8.9 °C and 31.2 °C to be 2.16 %/°C on the base of the solubility at 19.9 °C.
Conclusions:
Interpretation of results: soluble (1000-10000 mg/L)

The water solubility is noticable dependent on temperature and increases with increasing temperature. Under the conditions of this test the mean water solubility of the test item lead chloride in bidistilled water free from oxygen and carbon dioxide at 20 +/- 0.5 °C is determined to be 10.0 g/L.
The mean pH of the satureated solutions at 20 +/- 0.5 °C was ca. pH 4.2.

Description of key information

Recent OECD 105 study available on water solubility.

Key value for chemical safety assessment

Water solubility:
10 g/L
at the temperature of:
20 °C

Additional information

The water solubility is noticable dependent on temperature and increases with increasing temperature. Under the conditions of this test the mean water solubilities of the test item lead chloride in bidistilled water free from oxygen and carbon dioxide was 7.6 g/L at 8.9°C, 10 g/L at 19.9 °C and 12.56 g/L at 31.9°C. The temperature dependency was calculated as 2.16 %/°C on the base of the solubility at 19.9 °C.