Sulfate Ion → Hydrogen Peroxide

HRID 1647264Notes

Reaction equation

HRID 1647264 reaction equation
C(O)(=O)/C=C\C(O)=[O:5].C1(=O)OC(=O)[C@H]2CC=CC[C@@H]12.[S:20]([O-:24])([O-:23])(=[O:22])=[O:21].[OH-:25].[Na+:26].C(O)(=O)C=C>O>[S:20]([O:24][O:25][S:20]([O-:23])(=[O:22])=[O:21])([O-:23])(=[O:22])=[O:21].[Na+:26].[Na+:26].[OH:25][OH:5]

Participants

8

Reactant 5

HCID 1117Sulfate IonHCID 6581Acrylic AcidHCID 14798Sodium HydroxideHCID 98495Tetrahydrophthalic anhydride, cis-HCID 444266Maleic Acid

Product 2

HCID 784Hydrogen PeroxideHCID 62655Sodium Persulfate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Conditions

Temperature
95 °C

Procedure

To a two liter, 4-neck flask equipped with a mechanical stirrer, reflux condenser, thermometer, and inlets for the gradual addition of monomer and initiator solution was added 90.0 grams of deionized water, 62.5 grams of maleic acid, 67.07 grams of cis-1,2,3,6-tetrahydrophthalic anhydride, 5.0 grams of a 0.15% aqueous ferrous sulfate heptahydrate solution, 1.3 grams of a 0.15% aqueous coppper sulfate solution and 117.5 grams of 50% by weight aqueous sodium hydroxide. The contents of the flask were heated to 95° C. A monomer feed of 112.5 grams of acrylic acid, and an initiator solution of 7.5 grams of sodium persulfate, 41.6 grams of 30% by weight aqueous hydrogen peroxide and 50.0 grams of deionized water were prepared. 12.5 grams of the monomer feed were added to the flask. After two minutes, 10.0 grams of the initiator solution was added to the flask. The contents of the flask were then heated to 100° C. The remainder of the monomer feed and initiator solution were then fed into the flask linearly and separately while stirring over two hours and fifteen minutes. Once the additions were complete, the system was kept at 100° C. for 30 minutes. The system was then cooled to 60° C.

Workup

  1. customTo a two liter, 4-neck flask equipped with a mechanical stirrer
  2. temperaturereflux condenser
  3. additionthermometer, and inlets for the gradual addition of monomer and initiator solution
  4. temperatureThe contents of the flask were then heated to 100° C
  5. waitthe system was kept at 100° C. for 30 minutes
  6. temperatureThe system was then cooled to 60° C.

Sources & evidence

ORD record
ord-7cc3c781e6de47cca920611a248107a7
Source dataset
uspto-grants-1995_07
Patent number
US05430114

Reaction notes

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