Ammonia → Ammonium Sulfite

HRID 1578580

Reaction equation

HRID 1578580 reaction equation
[S:1]([O-:5])([O-:4])(=[O:3])=S.[NH4+:6].[NH4+].N.O=O.S(=O)=O>>[S:1](=[O:3])([OH:5])[O-:4].[NH4+:6].[S:1]([O-:5])([O-:4])=[O:3].[NH4+:6].[NH4+:6]

Participants

6

Reactant 4

HCID 222AmmoniaHCID 977OxygenHCID 1119Sulfur DioxideHCID 6096946Ammonium thiosulfate2×

Product 2

HCID 25041Ammonium SulfiteHCID 10441651Ammonium Bisulfite

Procedure

A process for the continuous manufacture of crystallized ammonium thiosulfate which comprises: reacting ammonia with oxygen containing sulfur dioxide in an ammonium thiosulfate solution to form ammonium bisulfite and ammonium sulfite at a pH of from 5.5 to 7.0 and a temperature of up to 80°C; and, in a second step, converting the ammonium bisulfite and ammonium sulfite in the solution formed with ammonia and sulfur to ammonium thiosulfate at a temperature of 105°C, said temperature being obtained by heating, if necessary.

Sources & evidence

ORD record
ord-1aa65ec38ea04e23b26f2f0c3eea36ce
Source dataset
uspto-grants-1976_02
Patent number
US03937793

Linked notes

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