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EC number: 206-104-4 | CAS number: 301-04-2
Water solubility
Administrative data
Link to relevant study record(s)
- 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
- Justification for type of information:
- See category approach details in section 13 of IUCLID
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Version / remarks:
- adopted 1995-07-27
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- 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:
- 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.
Interpretation of results: soluble (1,000-10,000 mg/L)
Reference
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.
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