Sodium Hydroxide → Sodium Nitrate

Reaction equation

[N+:1]([O-:6])([N+:3]([O-:5])=[O:4])=[O:2].[N+:7]([O-])=[O:8].[OH-].[Na+:11]>>[N+:3]([O-:5])([O-:8])=[O:4].[Na+:11].[N:1]([O-:6])=[O:2].[Na+:11].[N:7]=[O:8]

Participants

Reactant 3

HCID 14798Sodium Hydroxide

HCID 25352Nitrogen oxide (N2O4)

HCID 178526396Nitrogen Dioxide

Product 3

HCID 24268Sodium Nitrate

HCID 145068Nitric Oxide

HCID 23668193Sodium Nitrite

Procedure

Currently, the KSC oxidizer scrubbers react nitrogen tetroxide and/or nitrogen dioxide with nominally 25-wt. % sodium hydroxide, which produces sodium nitrate, sodium nitrite, and nitric oxide. The spent caustic scrubber liquor could be used as a fertilizer once the pH is adjusted; however, substitution of potassium hydroxide for sodium hydroxide increases the commercial value of the scrubber liquor as a fertilizer.