Thorium(IV) nitrate

Thorium(IV) nitrate

Identifiers
CAS Number	(anhydrous): 13823-29-5 Y (trihydrate): 87174-21-8 Y (tetrahydrate): 13470-07-0 Y (pentahydrate): 14767-04-5 Y (hexahydrate): 23739-44-8 Y
3D model (JSmol)	(anhydrous): Interactive image (tetrahydrate): Interactive image (pentahydrate): Interactive image (hexahydrate): Interactive image
ChemSpider	(anhydrous): 24497
ECHA InfoCard	100.034.090
EC Number	(anhydrous): 237-514-1
PubChem CID	(anhydrous): 26293 (tetrahydrate): 134672 (pentahydrate): 92043287 (hexahydrate): 129688133
UNII	(anhydrous): IF944P467K Y (tetrahydrate): 66RXJ6ZF36 Y
CompTox Dashboard (EPA)	(anhydrous): DTXSID4065656
InChI (anhydrous): InChI=1S/4NO3.Th/c4*2-1(3)4;/q4*-1;+4 Key: VGBPIHVLVSGJGR-UHFFFAOYSA-N (tetrahydrate): InChI=1S/4NO3.4H2O.Th/c4*2-1(3)4;;;;;/h;;;;4*1H2;/q4*-1;;;;;+4 Key: VAVIMIAZQDNXID-UHFFFAOYSA-N (pentahydrate): InChI=1S/4NO3.5H2O.Th/c4*2-1(3)4;;;;;;/h;;;;5*1H2;/q4*-1;;;;;;+4 Key: JFVMRMIHIHCMDY-UHFFFAOYSA-N (hexahydrate): InChI=1S/4NO3.6H2O.Th/c4*2-1(3)4;;;;;;;/h;;;;6*1H2;/q4*-1;;;;;;;+4 Key: HLGOSPFVTORIQZ-UHFFFAOYSA-N
SMILES (anhydrous): [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Th+4] (tetrahydrate): [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.[Th+4] (pentahydrate): [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.[Th+4] (hexahydrate): [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Th+4]
Properties
Chemical formula	Th(NO3)4
Molar mass	480.066 (anhydrous) 552.130 (tetrahydrate) 570.146 (pentahydrate) 588.162 (hexahydrate)
Appearance	Colorless crystal
Melting point	55 °C (131 °F; 328 K)
Boiling point	Decomposes
Solubility in water	Soluble[1]
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H272, H302, H315, H319, H335, H373, H411
Precautionary statements	P210, P220, P221, P260, P261, P264, P270, P271, P273, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P314, P321, P330, P332+P313, P337+P313, P362, P370+P378, P391, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Thorium(IV) nitrate is a chemical compound, a salt of thorium and nitric acid with the formula Th(NO₃)₄. A white solid in its anhydrous form, it can form tetra- and pentahydrates. As a salt of thorium it is weakly radioactive.