Glycine → Zinc Glycinate

HRID 2211296Notes

Reaction equation

HRID 2211296 reaction equation
[NH2:1][CH2:2][C:3]([OH:5])=[O:4].[O-2].[Zn+2:7].[Zn].C(O)C(O)C>O>[NH2:1][CH2:2][C:3]([O-:5])=[O:4].[Zn+2:7].[NH2:1][CH2:2][C:3]([O-:5])=[O:4]

Participants

6

Reactant 4

HCID 750GlycineHCID 1030Propylene GlycolHCID 23994Zinc2×HCID 3007857Zinc Oxide

Product 1

HCID 151910Zinc Glycinate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
90 °C

Procedure

Thirty five (35.0) pounds of water were added to a 22 liter vessel and heated to 90° C. Glycine (4.337 lbs.) was then added with stirring, and the solution was heated to 95° C. Zinc oxide (1.766 lbs.) was then added with stirring and heating continued for two hours until the solution was clear (gly/Zn=2.7/1; PG/Zn=3.0/1). Propylene glycol (4.94 lbs.) was then added and heating continued for an additional one-half hour.

Workup

  1. temperaturethe solution was heated to 95° C
  2. stirringwith stirring
  3. temperatureheating
  4. temperatureheating
  5. waitcontinued for an additional one-half hour

Sources & evidence

ORD record
ord-0306ac868ff940f8adf6f49d01fce92a
Source dataset
uspto-grants-1995_10
Patent number
US05463098

Reaction notes

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