Thorium(IV) nitrate

Thorium(IV) nitrate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.090 Edit this at Wikidata
EC Number
  • (anhydrous): 237-514-1
UNII
  • (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
  • (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
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
Soluble[1]
Hazards
GHS labelling:
GHS03: OxidizingGHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
Warning
H272, H302, H315, H319, H335, H373, H411
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).
Thorium(IV) nitrate used in a lamp.

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.

  1. ^ New Jersey Department of Health. Thorium Nitrate. Hazardous Substance Fact Sheet, 1987