Thorium Nitrate
Title: Thorium Nitrate
CAS Registry Number: 13823-29-5
Molecular Formula: N4O12Th
Molecular Weight: 480.06
Percent Composition: N 11.67%, O 39.99%, Th 48.34%
Line Formula: Th(NO3)4
Literature References: Commercial form obtained as tetrahydrate; also crystallizes with 6 and 12 mols H2O. Obtained from monazite: Pearce et al., Inorg. Synth. II, 38 (1946).
Derivative Type: Tetrahydrate
Properties: White, slightly deliquesc crystals. Very sol in water, alcohol, the soln having an acid reaction. Keep well closed.
Use: Thorium nitrate with 1% cerium nitrate constitutes the usual impregnating liq for incandescent mantles. As a reagent for determination of fluorine.

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