Thorium(IV) hydroxide

Thorium(IV) hydroxide  Names

IUPAC name

Thorium(IV) hydroxide

Identifiers

CAS Number

* 13825-36-0 Y[PubChem]

3D model (JSmol)

* Interactive image

ChemSpider |

* 145873 Y

EC Number |

* 237-522-5

PubChem CID

* 166732

InChI

* InChI=1S/4H2O.Th/h4*1H2;/q;;;;+4/p-4

Key: SFKTYEXKZXBQRQ-UHFFFAOYSA-J

SMILES

* [OH-].[OH-].[OH-].[OH-].[Th+4]

Properties

Chemical formula

| Th(OH)4
Molar mass | 300.07
Appearance  | white solid[1]
Related compounds

Other anions

| thorium dioxide
thorium nitrate

Other cations

| cerium(IV) hydroxide

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

Infobox references

Thorium(IV) hydroxide is an inorganic compound with a chemical formula Th(OH)4.

## Production

Thorium(IV) hydroxide can be produced by reacting sodium hydroxide and soluble thorium salts.[1]

## Reactions

New thorium(IV) hydroxide is soluble in acid but its solubility will decrease when older.[1]

Thorium(IV) hydroxide will break up at high temperature and produce thorium dioxide:

Th(OH)4 → ThO2 \+ 2 H2O

At high pressure, thorium(IV) hydroxide reacts with carbon dioxide, and produce thorium carbonate hemihydrate.[2]

## References

1. ↑ 1.0 1.1 1.2 《无机化合物制备手册》.朱文祥 主编.化学工业出版社. P143. 【III-251】氢氧化钍（thorium hydroxide）
2. ↑ H. Ehrhardt, H. Seidel, H. Schweer (March 1980). "Hochdrucksynthesen einiger Carbonate mit überkritischem CO2" (in de). Zeitschrift für anorganische und allgemeine Chemie 462 (1): 185–198. doi:10.1002/zaac.19804620121. ISSN 0044-2313. http://doi.wiley.com/10.1002/zaac.19804620121. Retrieved 2019-11-23.

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Hydroxides

| H2O |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | He

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LiOH | Be(OH)2 |  |  |  |  |  |  |  |  |  |  | B | C | NH3.H2O | O | F | Ne
NaOH | Mg(OH)2 |  |  |  |  |  |  |  |  |  |  | Al(OH)3 | Si | P | S | Cl | HArF (ArHF)
KOH | Ca(OH)2 | Sc(OH)3 | Ti | V | 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 | Se | Br | Kr
RbOH | Sr(OH)2 | Y(OH)3 | Zr(OH)4 | Nb | Mo | Tc | Ru | Rh | Pd | AgOH | Cd(OH)2 | In(OH)3 | Sn(OH)2
Sn(OH)4 | Sb(OH)3 | Te | I | Xe
CsOH | Ba(OH)2 | *  | 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
Fr | Ra | **  | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og |  |  |  |  |  |  |  |
|  | ↓ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| * | La(OH)3 | Ce(OH)3 | Pr(OH)3 | Nd(OH)3 | Pm(OH)3 | Sm(OH)3 | Eu(OH)3 | Gd(OH)3 | Tb(OH)3 | Dy(OH)3 | Ho(OH)3 | Er(OH)3 | Tm(OH)3 | Yb(OH)3 | Lu(OH)3 |
| ** | Ac | Th(OH)4 | Pa | UO2(OH)2 | Np | Pu | Am | Cm(OH)3 | Bk | Cf | Es | Fm | Md | No | Lr |

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