Dysprosium(III) nitrate

Dysprosium(III) nitrate is an inorganic compound, a salt of dysprosium and nitric acid with the chemical formula Dy(NO₃)₃. The compound forms yellowish crystals, dissolves in water, forms a crystalline hydrate.^[2]

Dysprosium(III) nitrate

Names
Other names Dysprosium nitrate, Dysprosium trinitrate
Identifiers
CAS Number	10143-38-1 N monhydrate: 100641-13-2 pentahydrate: 10031-49-9 hexahydrate: 35725-30-5
3D model (JSmol)	Interactive image monhydrate: Interactive image pentahydrate: Interactive image hexahydrate: Interactive image
ChemSpider	23375 monhydrate: 26666880 pentahydrate: 21241308 hexahydrate: 186810
ECHA InfoCard	100.030.360
EC Number	233-410-5 pentahydrate: 629-564-1
PubChem CID	25007 monhydrate: 57346095 pentahydrate: 91886635 hexahydrate: 215463
CompTox Dashboard (EPA)	DTXSID60890646 monhydrate: DTXSID80721100 hexahydrate: DTXSID50189253
InChI InChI=1S/Dy.3NO3/c;3*2-1(3)4/q+3;3*-1 Key: DVENVBCPDCQQGD-UHFFFAOYSA-N monhydrate: InChI=1S/Dy.3NO3.H2O/c;3*2-1(3)4;/h;;;;1H2/q+3;3*-1; Key: DSEBQRTVZFLVND-UHFFFAOYSA-N pentahydrate: InChI=1S/Dy.3NO3.5H2O/c;3*2-1(3)4;;;;;/h;;;;5*1H2/q+3;3*-1;;;;; Key: NOTQUFQJAWMLCE-UHFFFAOYSA-N hexahydrate: InChI=1S/Dy.3NO3.6H2O/c;3*2-1(3)4;;;;;;/h;;;;6*1H2/q+3;3*-1;;;;;; Key: DCKWZDOAGNMKMX-UHFFFAOYSA-N
SMILES O.[Dy+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O monhydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.[Dy+3] pentahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.[Dy+3] hexahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Dy+3]
Properties
Chemical formula	Dy(NO3)3
Molar mass	348.51
Appearance	Yellowish crystals
Melting point	88.6[1] °C (191.5 °F; 361.8 K)
Solubility in water	Soluble
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H272, H315, H319, H335
Precautionary statements	P210, P220, P221, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P405, P501
Related compounds
Related compounds	Terbium(III) nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

Anhydrous salt is obtained by the action of nitrogen dioxide on dysprosium(III) oxide:^[3]

${\displaystyle {\mathsf {2Dy_{2}O_{3}+9N_{2}O_{4}\ {\xrightarrow {150^{o}C}}\ 4Dy(NO_{3})_{3}+6NO}}}$

The action of nitrogen dioxide on metallic dysprosium:

${\displaystyle {\mathsf {Dy+3N_{2}O_{4}\ {\xrightarrow {200^{o}C}}\ Dy(NO_{3})_{3}+3NO}}}$

Physical properties

Dysprosium(III) nitrate forms yellowish crystals.^[4]

The anhydrous nitrate forms a crystalline hydrate in wet air with the ideal composition of Dy(NO₃)₃·5H₂O, which melts in its own crystallization water at 88.6 °C.^[5][6]

All hydrates (anhydrous, pentahydrate, and hexahydrate) are soluble in water and ethanol, hygroscopic.

Chemical properties

Hydrated dysprosium nitrate thermally decomposes to form DyONO₃,^{[citation needed]} and further heating produces dysprosium oxide.

Application

Dysprosium(III) nitrate is used as a catalyst.