Ammonium bisulfate → Ammonia

HRID 1867193Notes

Reaction equation

HRID 1867193 reaction equation
[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[NH4+:6].[NH4+].[S:8](=[O:12])(=[O:11])([OH:10])[O-:9].[NH4+].S(OS([O-])(=O)=O)([O-])(=O)=O.[NH4+].[NH4+]>>[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[NH4+:6].[NH4+:6].[NH3:6].[S:8](=[O:10])(=[O:9])([OH:12])[O-:11].[NH4+:6]

Participants

6

Reactant 3

HCID 24655Ammonium bisulfateHCID 6097028Ammonium Sulfate2×HCID 11960345Pyrosulfuric acid, diammonium salt

Product 3

HCID 222AmmoniaHCID 24655Ammonium bisulfateHCID 6097028Ammonium Sulfate

Procedure

When the first (ammonium sulfate) stream is substantially composed of ammonium sulfate, the decomposition product comprises ammonium bisulfate, ammonium pyrosulfate, or a mixture of the two compounds. As reported by Halstead (J. Appl. Chem., 1970, 20:129-132), the thermal decomposition of ammonium sulfate produces ammonia and ammonium bisulfate. The ammonium bisulfate can then undergo dehydration to form ammonium pyrosulfate. However, the practice of the invention is not limited by the relative amounts of ammonium bisulfate and ammonium pyrosulfate in the decomposition product.

Workup

  1. additiona mixture of the two compounds

Sources & evidence

ORD record
ord-9a779f19aef64fe5b76f15992016dbaf
Source dataset
uspto-grants-2009_12
Patent number
US07632479B2

Reaction notes

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