Uranyl sulfate

O=U=O[SO

Identifiers

CAS Number

* anhydrous:: 1314-64-3
* trihdyrate:: 20910-28-5

3D model (JSmol)

* anhydrous:: Interactive image
* monohdyrate:: Interactive image
* dihdyrate:: Interactive image
* trihdyrate:: Interactive image
* pentahydrate:: Interactive image

ChemSpider |

* anhydrous:: 14131

EC Number |

* anhydrous:: 215-240-3

PubChem CID

* anhydrous:: 14815
* monohdyrate:: 129703883
* dihdyrate:: 129772678
* trihdyrate:: 71587042
* pentahydrate:: 129763198

UNII |

* trihdyrate:: 63MHT04U9C

UN number | 2909

InChI

* InChI=1S/H2O4S.2O.U/c1-5(2,3)4;;;/h(H2,1,2,3,4);;;/q;;;+2/p-2

Key: XEZIPWHQHLVFHG-UHFFFAOYSA-L

* monohdyrate:: InChI=1S/H2O4S.H2O.2O.U/c1-5(2,3)4;;;;/h(H2,1,2,3,4);1H2;;;/q;;;;+2/p-2

Key: GSSXPGLZRCAGDP-UHFFFAOYSA-L

* dihdyrate:: InChI=1S/H2O4S.2H2O.2O.U/c1-5(2,3)4;;;;;/h(H2,1,2,3,4);2*1H2;;;/q;;;;;+2/p-2

Key: PJGZKVQRFYKDMB-UHFFFAOYSA-L

* trihdyrate:: InChI=1S/H2O4S.3H2O.2O.U/c1-5(2,3)4;;;;;;/h(H2,1,2,3,4);3*1H2;;;/q;;;;2*-2;/p-2

Key: SBCFBOOTSWECOA-UHFFFAOYSA-L

* pentahydrate:: InChI=1S/H2O4S.5H2O.2O.U/c1-5(2,3)4;;;;;;;;/h(H2,1,2,3,4);5*1H2;;;/q;;;;;;;;+2/p-2

Key: FJVCKQOAEFENSP-UHFFFAOYSA-L

SMILES

* anhydrous:: [O-]S(=O)(=O)[O-].O=[U+2]=O

* monohdyrate:: O.[O-]S(=O)(=O)[O-].O=[U+2]=O

* dihdyrate:: O.O.[O-]S(=O)(=O)[O-].O=[U+2]=O

* trihdyrate:: O.O.O.[O-2].[O-2].[O-]S(=O)(=O)[O-].[U]

* pentahydrate:: O.O.O.O.O.[O-]S(=O)(=O)[O-].O=[U+2]=O

Properties

Chemical formula

| UO2SO4
Molar mass | 366.09 g/mol
Density | 3.28 g/cm3 @ 20 °C

Solubility in water

| 27.5 g/100 mL in water at 25 °C
Related compounds

Other anions

| Uranyl chloride
Uranyl nitrate
Uranyl carbonate

Related compounds

| Uranium dioxide

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Y verify (what is YN ?)
Infobox references

Tracking categories (test):

* PairSizeSet

Uranyl sulfate describes a family of inorganic compounds with the formula UO2SO4(H2O)n. These salts consist of sulfate, the uranyl ion, and water. They are lemon-yellow solids. Uranyl sulfates are intermediates in some extraction methods used for uranium ores.[1] These compounds can also take the form of an anhydrous salt.

## Contents

* 1 Structure
* 2 Uses
* 3 Related compounds
* 4 References

## Structure

The structure of UO2(SO4)(H2O)3.5 is illustrative of the uranyl sulfates. The trans-UO22+ centers are encased in a pentagonal bipyramidal coordination sphere. In the pentagonal plane are five oxygen ligands derived from sulfate and aquo ligands. The compound is a coordination polymer.[2]

## Uses

Aside from the large scale use in mining, uranyl sulfate finds some use as a negative stain in microscopy and tracer in biology. The Aqueous Homogeneous Reactor experiment, constructed in 1951, circulated a fuel composed of 565 grams of U-235 enriched to 14.7% in the form of uranyl sulfate.[citation needed]

The acid process of milling uranium ores involves precipitating uranyl sulfate from the pregnant leaching solution to produce the semi-refined product referred to as yellowcake.[3]

## Related compounds

* the hydrogensulfate.[4]
* potassium uranyl sulfate, K2UO2(SO4)2, is a double salt used by Henri Becquerel in his discovery of radioactivity.[citation needed]

## References

1. ↑ Peehs, Martin; Walter, Thomas; Walter, Sabine; Zemek, Martin (2007). "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a27_281.pub2.
2. ↑ Zalkin, Allan; Ruben, Helena; Templeton, David H. (1978). "Structure of a New Uranyl Sulfate Hydrate α-2UO2SO4.7H2O". Inorganic Chemistry 17 (12): 3701–3702. doi:10.1021/ic50190a075.
3. ↑ "Metallurgy". MQes Uranium Inc.. http://www.mqes-uranium.com/metallurgy.html.
4. ↑ Betke, Ulf; Wickleder, Mathias S. (2012). "Oleum and Sulfuric Acid as Reaction Media: The Actinide Examples UO2(S2O7)-lt (Low temperature), UO2(S2O7)-ht (High temperature), UO2(HSO4)2, An(SO4)2 (An = Th, U), Th4(HSO4)2(SO4)7 and Th(HSO4)2(SO4)". European Journal of Inorganic Chemistry 2012 (2): 306–317. doi:10.1002/ejic.201100975.

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Uranium compounds

U(II)|

* UB2
* US

U(III)|

* UF3
* UCl3
* UI3
* UP
* U(OH)3
* UH3
* UN

| Organouranium(III) compounds|

* U(C5H5)3

|

U(IV)|

* U(BH4)4
* UCl4
* UF4
* UBr4
* UI4
* UO2
* USi2
* US2
* U(SO4)2

| Organouranium(IV) compounds|

* U(C8H8)2
* U(C5H5)4
* U(C5H5)3Cl

|

U(IV,V)|

* U2N3

U(V)|

* UCl5
* UF5
* UBr5
* UI5
* U2O5

U(V,VI)|

* U3O8

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(SO4)2
* ZnUO2(CH3COO)4
* UN2
* H2UO4
* UO6 (hypothetical)

U(XII)|

* UO6 (hypothetical)

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Compounds containing the sulfate group

H2SO4 |  |  |  | He

|
|
|
|

Li2SO4 | BeSO4 | B  | esters
ROSO3−
(RO)2SO2 | (NH4)2SO4
[N2H5]HSO4
(NH3OH)2SO4
NOHSO4 | HOSO4 | F  | Ne
Na2SO4
NaHSO4 | MgSO4 | Al2(SO4)3
Al2SO4(OAc)4 | Si  | P  | SO42−
HSO3HSO4
(HSO4)2 | Cl  | Ar
K2SO4
KHSO4 | CaSO4 | Sc2(SO4)3 | TiOSO4 | VSO4
V2(SO4)3
VOSO4 | CrSO4
Cr2(SO4)3 | MnSO4 | FeSO4
Fe2(SO4)3 | CoSO4 | NiSO4 | CuSO4
Cu2SO4
[Cu(NH3)4(H2O)]SO4 | ZnSO4 | Ga2(SO4)3 | Ge  | As  | Se  | Br  | Kr
RbHSO4
Rb2SO4 | SrSO4 | Y2(SO4)3 | Zr(SO4)2 | Nb  | Mo  | Tc  | Ru  | Rh2(SO4)3 | PdSO4 | Ag2SO4 | CdSO4 | In2(SO4)3 | SnSO4
Sn(SO4)2 | Sb2(SO4)3 | Te  | I  | Xe
Cs2SO4
CsHSO4 | BaSO4 |  | Hf  | Ta  | W  | Re  | Os  | Ir  | Pt  | AuSO4
Au2(SO4)3 | Hg2SO4
HgSO4 | Tl2SO4
Tl2(SO4)3 | PbSO4 | Bi2(SO4)3 | Po  | At  | Rn
Fr  | Ra  |  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
La  | Ce2(SO4)3
Ce(SO4)2 | Pr2(SO4)3 | Nd  | Pm  | Sm  | Eu  | Gd  | Tb  | Dy  | Ho  | Er  | Tm  | Yb2(SO4)3 | Lu
Ac  | Th  | Pa  | U(SO4)2
UO2SO4 | Np  | Pu  | Am  | Cm  | Bk  | Cf  | Es  | Fm  | Md  | No  | Lr

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