Hydrogen Peroxide → HCID 21461527, compound

HRID 1637141Notes

Reaction equation

HRID 1637141 reaction equation
OO.S(=O)(=O)(O)O.[I-:8].[K+:9].[S:10]([O-:14])([O-:13])(=[O:12])=[S:11].[Na+:15].[Na+]>[NH4+].O>[I-:8].[K+:9].[S:10]([O-:14])([O-:13])(=[O:12])=[S:11].[Na+:15].[Na+:15]

Participants

7

Reactant 4

HCID 784Hydrogen Peroxide2×HCID 1118Sulfuric AcidHCID 4875Potassium IodideHCID 24477Sodium Thiosulfate

Product 1

HCID 21461527HCID 21461527, compound

Reagents, catalysts & solvents 2

HCID 223AmmoniumCatalystHCID 962WaterSolvent

Procedure

This potassium iodide-sodium thiosulfate titration of hydrogen peroxide can be used in the presence of oxidizable organic materials. Typically, 0.1-N sodium thiosulfate is used to back titrate iodine produced by the oxidation of potassium iodide by the hydrogen peroxide sample. The hydrogen peroxide sample is added to approximately 100 mL of water that contains 10 mL of a 1:4 (volume/volume) sulfuric acid solution. Next, 10 mL of 20-weight-percent potassium iodide, and 3 to 5 drops of ammonium molydate are added to the hydrogen peroxide sample. The resulting solution is titrated with 0.1-N sodium thiosulfate to a straw yellow color, then 5 to 10 mL of starch indicator solution is added and the titration is continued to a clear end point.

Sources & evidence

ORD record
ord-68b30241673440139a3aa65b0ce794e8
Source dataset
uspto-grants-2000_03
Patent number
US06039783

Reaction notes

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