Ammonium Hydroxide → Tricopper;dihydroxide;disulfate

HRID 1386431Notes

Reaction equation

HRID 1386431 reaction equation
[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[NH4+].[NH4+].[S:8]([O-:12])([O-:11])(=[O:10])=[O:9].[Cu+2:13].[OH-].[NH4+]>>[OH-:2].[OH-:9].[O-:4][S:1]([O-:5])(=[O:3])=[O:2].[O-:11][S:8]([O-:12])(=[O:10])=[O:9].[Cu+2:13].[Cu+2:13].[Cu+2:13]

Participants

4

Reactant 3

HCID 14923Ammonium HydroxideHCID 24462Copper SulfateHCID 6097028Ammonium Sulfate

Product 1

HCID 159382Tricopper;dihydroxide;disulfateYield 71.4%

Procedure

Tribasic copper sulfate was prepared according to the procedure described in Example 4. Initially the reactor vessel contained 100 ml of an aqueous solution of ammonium sulfate (400 g/l). An aqueous, acidic solution of copper sulfate (40 g Cu/l, pH 1.0) was added to the reactor vessel at a flow rate of 5 ml/min. and admixed with an aqueous solution of ammonium hydroxide (13% NH3), which was added at a flow rate sufficient to maintain a reaction pH of about 5.0. The tribasic copper sulfate immediately precipitated from solution as a pale, blue-green solid. The solid was collected and dried to provide a 71.4% yield of tribasic copper sulfate. The tribasic copper sulfate had a water solubility of about 430 mg Cu per liter and a hydroscopicity when stored in 90% humidity for 140 hr. of about 1.73% weight gain verses a 14.4% weight gain for reagent grade copper sulfate pentahydrate.

Workup

  1. customTribasic copper sulfate was prepared
  2. additionwas added at a flow rate sufficient
  3. temperatureto maintain
  4. customa reaction pH of about 5.0
  5. customThe tribasic copper sulfate immediately precipitated from solution as a pale, blue-green solid
  6. customThe solid was collected
  7. customdried

Sources & evidence

ORD record
ord-4089f547939d441c9a7ebbd3b410e6c9
Source dataset
uspto-grants-2001_07
Patent number
US06265438B1

Reaction notes

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