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Lead(II) perchlorate

Lead(II) perchlorate is a chemical compound with the formula Pb(ClO4)2·xH2O, where is x is 0,1, or 3. It is an extremely hygroscopic white solid that is very soluble in water.[1]

Lead(II) perchlorate
Names
Other names
  • Plumbous perchlorate
Identifiers
  • 13637-76-8
3D model (JSmol)
  • Interactive image
ChemSpider
  • 55560
ECHA InfoCard 100.033.736
EC Number
  • 237-125-7
  • 61655
UN number 1470
  • DTXSID10890712
  • InChI=1S/2ClHO4.Pb/c2*2-1(3,4)5;/h2*(H,2,3,4,5);/q;;+2/p-2
  • [O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[Pb+2]
Properties
Pb(ClO4)2
Molar mass 406.10 g/mol
Appearance White solid
Density 2.6 g/cm3
Boiling point 250 °C (482 °F; 523 K) (decomposes)
256.2 g/100 ml (25 °C)
Vapor pressure 0.36 Torr (trihydrate)
Hazards
GHS labelling:
H272, H302, H332, H360Df, H373, H410
P210, P260, P273, P301+P312, P304+P340, P308+P313
Related compounds
Other cations
Mercury(II) perchlorate; Tin(II) perchlorate; Cadmium perchlorate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Preparation edit

Lead perchlorate trihydrate is produced by the reaction of lead(II) oxide, lead carbonate, or lead nitrate by perchloric acid:

Pb(NO3)2 + HClO4 → Pb(ClO4)2 + HNO3

The excess perchloric acid was removed by first heating the solution to 125 °C, then heating it under moist air at 160 °C to remove the perchloric acid by converting the acid to the dihydrate. The anhydrous salt, Pb(ClO4)2, is produced by heating the trihydrate to 120 °C under water-free conditions over phosphorus pentoxide. The trihydrate melts at 83 °C. The anhydrous salt decomposes into lead(II) chloride and lead(II) oxide at 250 °C. The monohydrate is produced by only partially dehydrating the trihydrate, and this salt undergoes hydrolysis at 103 °C.[2]

The solution of anhydrous lead(II) perchlorate in methanol is explosive.

References edit

  1. ^ H. H. Willard; J. L. Kassner (1930). "PREPARATION AND PROPERTIES OF LEAD PERCHLORATE". Journal of the American Chemical Society. ACS Publications. 52 (6): 2391–2396. doi:10.1021/ja01369a027.
  2. ^ A. V. Dudin (1993). "Water-vapor pressure and thermodynamics of the dehydration of manganese, nickel, cadmium, and lead perchlorate hydrates". Russian Chemical Bulletin. 42: 417–421. doi:10.1007/BF00698419.

lead, perchlorate, chemical, compound, with, formula, clo4, xh2o, where, extremely, hygroscopic, white, solid, that, very, soluble, water, namesother, names, plumbous, perchlorateidentifierscas, number, 13637, model, jsmol, interactive, imagechemspider, 55560e. Lead II perchlorate is a chemical compound with the formula Pb ClO4 2 xH2O where is x is 0 1 or 3 It is an extremely hygroscopic white solid that is very soluble in water 1 Lead II perchlorate NamesOther names Plumbous perchlorateIdentifiersCAS Number 13637 76 83D model JSmol Interactive imageChemSpider 55560ECHA InfoCard 100 033 736EC Number 237 125 7PubChem CID 61655UN number 1470CompTox Dashboard EPA DTXSID10890712InChI InChI 1S 2ClHO4 Pb c2 2 1 3 4 5 h2 H 2 3 4 5 q 2 p 2SMILES O Cl O O O O Cl O O O Pb 2 PropertiesChemical formula Pb ClO4 2Molar mass 406 10 g molAppearance White solidDensity 2 6 g cm3Boiling point 250 C 482 F 523 K decomposes Solubility in water 256 2 g 100 ml 25 C Vapor pressure 0 36 Torr trihydrate HazardsGHS labelling PictogramsHazard statements H272 H302 H332 H360Df H373 H410Precautionary statements P210 P260 P273 P301 P312 P304 P340 P308 P313Related compoundsOther cations Mercury II perchlorate Tin II perchlorate Cadmium perchlorateExcept where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Infobox referencesPreparation editLead perchlorate trihydrate is produced by the reaction of lead II oxide lead carbonate or lead nitrate by perchloric acid Pb NO3 2 HClO4 Pb ClO4 2 HNO3The excess perchloric acid was removed by first heating the solution to 125 C then heating it under moist air at 160 C to remove the perchloric acid by converting the acid to the dihydrate The anhydrous salt Pb ClO4 2 is produced by heating the trihydrate to 120 C under water free conditions over phosphorus pentoxide The trihydrate melts at 83 C The anhydrous salt decomposes into lead II chloride and lead II oxide at 250 C The monohydrate is produced by only partially dehydrating the trihydrate and this salt undergoes hydrolysis at 103 C 2 The solution of anhydrous lead II perchlorate in methanol is explosive References edit H H Willard J L Kassner 1930 PREPARATION AND PROPERTIES OF LEAD PERCHLORATE Journal of the American Chemical Society ACS Publications 52 6 2391 2396 doi 10 1021 ja01369a027 A V Dudin 1993 Water vapor pressure and thermodynamics of the dehydration of manganese nickel cadmium and lead perchlorate hydrates Russian Chemical Bulletin 42 417 421 doi 10 1007 BF00698419 Retrieved from https en wikipedia org w index php title Lead II perchlorate amp oldid 1151847592, wikipedia, wiki, book, books, library,

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