2,3-Dihydroxybutanedioic Acid → Dipotassium 2,3-dihydroxybutanedioate

HRID 1730142Notes

Reaction equation

HRID 1730142 reaction equation
[OH-].[K+:2].[C:3]([OH:12])(=[O:11])[CH:4]([CH:6]([C:8]([OH:10])=[O:9])[OH:7])[OH:5]>O>[C:8]([CH:6]([CH:4]([C:3]([O-:12])=[O:11])[OH:5])[OH:7])([O-:10])=[O:9].[K+:2].[K+:2]

Participants

4

Reactant 2

HCID 8752,3-Dihydroxybutanedioic Acid2×HCID 14797Potassium Hydroxide

Product 1

HCID 6100505Dipotassium 2,3-dihydroxybutanedioate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A potassium tartrate buffer was prepared by mixing KOH with tartaric acid at a K:tartaric acid mole ratio of 2:1 and diluting the resulting compound with enough water to yield a buffer solution with a pH of 2.9. 73 g of the buffer was then added to a reconstituted (30% by weight) dried zirconyl chloride five-sixths basic aluminum chloride solution prepared at a mole ratio of Al:Zr of 4:1. This buffered solution was re-dried as in Example I, and analyzed: 12.9% Al, 11.2% Zr, 7.9% K, and 14.6% tartaric acid. The re-dried product was reconstituted to 20% by weight in water and exhibited a pH of 3.8.

Workup

  1. customto yield a buffer solution with a pH of 2.9
  2. addition73 g of the buffer was then added to
  3. dry with materialdried zirconyl chloride five-sixths basic aluminum chloride solution
  4. customprepared at a mole ratio of Al
  5. customThis buffered solution was re-dried as in Example I

Sources & evidence

ORD record
ord-f6b4f435bec44af5a3f8f237192c3547
Source dataset
uspto-grants-1976_11
Patent number
US03991176

Reaction notes

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