Lead(II) oxalate

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Lead(II) oxalate
Lead(II) oxalate.svg
Identifiers
3D model (Jmol)
ChemSpider
ECHA InfoCard 100.011.280
EC Number 212-413-5
UN number 2291
Properties
PbC2O4
Molar mass 295.219
Appearance White Powder
Density 5.28 g/cm3
Melting point 327.4 °C (621.3 °F; 600.5 K)
Boiling point 1,740 °C (3,160 °F; 2,010 K)
Thermochemistry
146.0216 J [1]
-851.444 kJ/mol
Hazards
Main hazards Nephrotoxin, Reproductive Toxin, Neurotoxin, IARC Carcinogen, Birth Defects, Highly Toxic
GHS pictograms The skull-and-crossbones pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
6.1
Ingestion hazard Toxic if swallowed. Seek medical attention immediately.
Inhalation hazard Toxic if inhaled. Get breathing assistance immediately.
Eye hazard Causes irritation.
Skin hazard Harmful if absorbed in the skin. Causes irritation.
US health exposure limits (NIOSH):
PEL (Permissible)
0.05 mg/m3, as Pb
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Lead(II) oxalate is an inorganic compound with the formula PbC2O4. It is naturally found as a heavy white solid.[2]

Preparation[edit]

This compound is commercially available. It may be prepared by the metathesis reaction between lead(II) nitrate and sodium oxalate:[3]

Pb2+(aq) + C2O42− → PbC2O4 (s)

Solubility[edit]

Lead(II) oxalate is sparingly soluble in water. Its solubility is increased in presence of excess oxalate anions, due to the formation of the Pb(C2O4)22− complex ion.[4]

References[edit]

  1. ^ "Lead(II) Oxalate". Chemistry Reference. http://www.chemistry-reference.com/q_compounds.asp?CAS=814-93-7.
  2. ^ "Lead Oxalate". American Elements: The World's Manufacturer of Engineered & Advanced Materials. http://www.americanelements.com/pboxl.html.
  3. ^ Grases, F.; Ruiz, J.; Costa-Bauzá, A. (1993). "Studies on Lead Oxalate Crystalline Growth". Journal of Colloid and Interface Science. 155 (2): 265–270. doi:10.1006/jcis.1993.1035. 
  4. ^ Kolthoff, I.M.; Perlich, R. W.; Weiblen, D. (1942). "The Solubility of lead Sulfate and of Lead Oxalate in Various Media". Journal of Physical Chemistry. 46 (5): 561. doi:10.1021/j150419a004.