Uranyl hydroxide

Uranyl hydroxide
Ball and stick model of crystalline uranyl hydroxide
Identifiers
CAS Number
  • 211573-15-8 ☒N
3D model (JSmol)
  • Interactive image
ChemSpider
  • 4576989 ☒N
PubChem CID
  • 5465112
UN number 2909
InChI
  • InChI=1S/2H2O.2O.U/h2*1H2;;;/q;;;;+2/p-2 ☒N
    Key: VWIQIIGYDAPONF-UHFFFAOYSA-L ☒N
  • O=[U+2]=O.[OH-].[OH-]
Properties
Chemical formula
 UH
2O
4
Molar mass 304.0424 g mol−1
Related compounds
Related compounds
 Sulfuric acid
Chromic acid
Uranium trioxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound

Uranyl hydroxide is a hydroxide of uranium with the chemical formula UO2(OH)2 in the monomeric form and (UO2)2(OH)4 in the dimeric; both forms may exist in normal aqueous media. Uranyl hydroxide hydrate is precipitated as a colloidal yellowcake from oxidized uranium liquors near neutral pH.

Uranyl hydroxide was once used in glassmaking and ceramics in the colouring of the vitreous phases and the preparation of pigments for high temperature firing. The introduction of alkaline diuranates (like sodium diuranate) into glasses leads to yellow by transmission, green by reflection; moreover these glasses become dichroic and fluorescent under ultraviolet rays.

Uranyl hydroxide is teratogenic and radioactive.

References

  • The Structure of the a Form of Uranyl Hydroxide
  • Alexander, C.A. (2005) "Volatilization of urania under strongly oxidizing conditions," Journal of Nuclear Materials, 346, 312–318.
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U(II)
U(III)
  • UF3
  • UCl3
  • UBr3
  • UI3
  • UP
  • U(OH)3
  • UH3
  • UN
Organouranium(III) compounds
  • U(C5H5)3
    • U(IV)
    • U(BH4)4
    • UC
    • UCl4
    • UF4
    • UBr4
    • UI4
    • UO2
    • UH4
    • USi2
    • US2
    • USe2
    • UTe2
    • U(SO4)2
    Organouranium(IV) compounds
  • U(C8H8)2
  • U(C5H5)4
  • U(C5H5)3Cl
    • U(IV,V)
    • U2N3
    U(IV,VI)
    • U3O8
    U(V)
    • UCl5
    • UF5
    • UBr5
    • UI5
    • U2O5
    U(VI)
    • (NH4)2U2O7
    • Na2U2O7
    • UCl6
    • UF6
    • U(PO4)2
    • UO3
    • UO4
    • UO2(CH3COO)2
    • UO2(CHO2)2
    • UO2CO3
    • UO2CO3·2(NH4)2CO3
    • UO2Cl2
    • UO2F2
    • UO2(NO3)2
    • UO2(OH)2
    • (UO2)2(OH)4
    • UO2(SO4)2
    • ZnUO2(CH3COO)4
    • UN2
    • H2UO4
    • Na4UO2(CO3)3
    U(XII)
    • UO6 (hypothetical)
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    HOH He
    LiOH Be(OH)2 B(OH)3 C(OH)4 N(OH)3
    [NH4]+OH−     		O(OH)2 FOH Ne
    NaOH Mg(OH)2 Al(OH)3 Si(OH)4 P(OH)3 S(OH)2 ClOH Ar
    KOH Ca(OH)2 Sc(OH)3 Ti(OH)2
    Ti(OH)3
    Ti(OH)4     		V(OH)2
    V(OH)3     		Cr(OH)2
    Cr(OH)3     		Mn(OH)2 Fe(OH)2
    Fe(OH)3     		Co(OH)2 Ni(OH)2 CuOH
    Cu(OH)2     		Zn(OH)2 Ga(OH)3 Ge(OH)2 As(OH)3 Se BrOH Kr
    RbOH Sr(OH)2 Y(OH)3 Zr(OH)4 Nb Mo Tc(OH)4 Ru Rh(OH)3 Pd AgOH Cd(OH)2 In(OH)3 Sn(OH)2
    Sn(OH)4     		Sb(OH)3 Te(OH)6 IOH Xe
    CsOH Ba(OH)2 * Lu(OH)3 Hf Ta W Re Os Ir Pt Au(OH)3 Hg(OH)2 TlOH
    Tl(OH)3     		Pb(OH)2
    Pb(OH)4     		Bi(OH)3 Po At Rn
    FrOH Ra(OH)2 ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
     
    * La(OH)3 Ce(OH)3
    Ce(OH)4     		Pr(OH)3 Nd(OH)3 Pm(OH)3 Sm(OH)3 Eu(OH)2
    Eu(OH)3     		Gd(OH)3 Tb(OH)3 Dy(OH)3 Ho(OH)3 Er(OH)3 Tm(OH)3 Yb(OH)3
    ** Ac(OH)3 Th(OH)4 Pa U(OH)2
    U(OH)3
    UO2(OH)2     		Np(OH)3
    Np(OH)4
    NpO2(OH)3     		Pu Am(OH)3 Cm(OH)3 Bk Cf Es Fm Md No


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