Uranyl peroxide

Uranyl peroxide

Identifiers
CAS Number	12036-71-4 Y
3D model (JSmol)	Interactive image
ChemSpider	32816408
ECHA InfoCard	100.031.671
EC Number	234-852-1
PubChem CID	hydrate: 29645
UNII	7TIU7JF0EV
UN number	2909
InChI InChI=1S/O2.2O.U/c1-2;;;/q3*-2;+6 Key: XFDGHOMYEXQKDC-UHFFFAOYSA-N
SMILES [O-2].[O-2].[O-][O-].[U+6]
Properties
Chemical formula	UO4·nH2O
Molar mass	302.03 g/mol (as UO4)
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

Uranyl peroxide or uranium peroxide hydrate (UO₄·nH₂O) is a pale-yellow, soluble peroxide of uranium. It is found to be present at one stage of the enriched uranium fuel cycle and in yellowcake prepared via the in situ leaching and resin ion exchange system. This compound, also expressed as UO₃·(H₂O₂)·(H₂O), is very similar to uranium trioxide hydrate UO₃·nH₂O. The dissolution behaviour of both compounds are very sensitive to the hydration state (n can vary between 0 and 4). One main characteristic of uranium peroxide is that it consists of small needles with an average AMAD of about 1.1 μm.

The uranyl minerals studtite, UO₄·4H₂O, and metastudtite, UO₄·2H₂O, are the only minerals discovered to date found to contain peroxide. The product is a light yellow powder.