Nitric Acid → Bismuth nitrate

HRID 2307836Notes

Reaction equation

HRID 2307836 reaction equation
S([O-])([O-])(=O)=O.[Bi+3:6].S([O-])([O-])(=O)=O.S([O-])([O-])(=O)=O.[Bi+3].[N+:18]([O-:21])([OH:20])=[O:19].[Bi]=O>>[N+:18]([O-:21])([O-:20])=[O:19].[Bi+3:6].[N+:18]([O-:21])([O-:20])=[O:19].[N+:18]([O-:21])([O-:20])=[O:19]

Participants

4

Reactant 3

HCID 944Nitric AcidHCID 198144Bismuth(III) sulfateHCID 6327914Bismuth-oxygen

Product 1

HCID 107711Bismuth nitrate

Procedure

There are three forms of bismuth nitrate, two of which are insoluble in water. One way to obtain soluble bismuth nitrate is to roast the bismuth sulfate first at a low temperature (200° C.) to convert it to the oxide, and then subject the oxide to concentrated nitric acid. The molar ratio of acid to bismuth oxide should be greater than or equal to 4:1 in order to avoid producing insoluble bismuth nitrate. Using this method, the bismuth was completely dissolved. Fine crystals of soluble bismuth nitrate were then formed through evaporation of a majority of the liquor, followed by filtration.

Workup

  1. customfirst at a low temperature (200° C.)

Sources & evidence

ORD record
ord-81b103b42fe64d41bae42b94b78c3545
Source dataset
uspto-grants-2004_12
Patent number
US06833124B2

Reaction notes

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