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草酸铅

草酸铅
英文名 Lead(II) oxalate
识别
CAS号 814-93-7  ☒N
PubChem 197481
ChemSpider 55161
SMILES
 
  • C(=O)(C(=O)[O-])[O-].[Pb+2]
InChI
 
  • 1S/C2H2O4.Pb/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2
UN编号 2291
性质
化学式 PbC2O4
摩尔质量 295.219 g·mol⁻¹
外观 白色粉末
密度 5.28 g/cm3
熔点 327.4 °C(601 K)
沸点 1740 °C(2013 K)
热力学
ΔfHm298K -851.444 kJ/mol
S298K 146.0216 J [1]
危险性
欧盟分类 6.1
GHS危险性符号
《全球化学品统一分类和标签制度》(简称“GHS”)中有毒物质的标签图案
PEL 0.05 mg/m3, as Pb
相关物质
其他阴离子 碳酸铅
乙酸铅
其他阳离子 草酸亚锡
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

草酸铅(II)的草酸盐,化学式为PbC2O4。它是白色重质固体。[2]

制备

该化合物有市售品。它可以通过硝酸铅草酸钠复分解反应制备:[3]

Pb2+(aq) + C2O42− → PbC2O4 (s)

溶解性

草酸铅在水中的溶解度很小,但是在过量的草酸根离子存在下,由于形成了Pb(C2O4)22−配离子,溶解度增大。[4]

参考文献

  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页面存档备份,存于互联网档案馆).
  3. ^ Grases, F.; Ruiz, J.; Costa-Bauzá, A. Studies on Lead Oxalate Crystalline Growth. Journal of Colloid and Interface Science. 1993, 155 (2): 265–270. doi:10.1006/jcis.1993.1035. 
  4. ^ Kolthoff, I.M.; Perlich, R. W.; Weiblen, D. The Solubility of lead Sulfate and of Lead Oxalate in Various Media. Journal of Physical Chemistry. 1942, 46 (5): 561. doi:10.1021/j150419a004. 
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草酸铅
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