Malic Acid → Dicalciumhydroxy malate

HRID 49640

Reaction equation

HRID 49640 reaction equation
[OH-:1].[Ca+2:2].[OH-].[C:4]([OH:12])(=[O:11])[CH:5]([CH2:7][C:8]([OH:10])=[O:9])[OH:6]>O>[C:4]([O:12][OH:1])(=[O:11])[CH:5]([CH2:7][C:8]([O-:10])=[O:9])[OH:6].[Ca+2:2].[Ca+2:2].[OH:1][O:11][C:4](=[O:12])[CH:5]([CH2:7][C:8]([O-:10])=[O:9])[OH:6].[OH:1][O:11][C:4](=[O:12])[CH:5]([CH2:7][C:8]([O-:10])=[O:9])[OH:6].[OH:1][O:11][C:4](=[O:12])[CH:5]([CH2:7][C:8]([O-:10])=[O:9])[OH:6]

Participants

4

Reactant 2

HCID 525Malic AcidHCID 6093208Calcium Hydroxide

Product 1

HCID 86594317Dicalciumhydroxy malate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent6×

Procedure

A dicalciumhydroxy malate granular product was prepared by mixing two molar equivalents of particulate calcium hydroxide with one molar equivalent of particulate malic acid (totaling 45 kg for the entire composition) in a Ribbon Blender for 15 minutes at normal speeds. A water jacket was used to ensure that the product would not over react when small amounts of water were added to the batch. Next, about 1 L of water was slowly sprayed into the particulate mixture product. After about 10 minutes of reaction time (where the product became spongy and had risen, and then dropped back to a more granular state), an additional 1 L of water was added. This was repeated several times until no further reaction appeared to be occurring upon addition of water. The end result was a granular product. Once a fully reacted granular product was formed, no additional water was added. The resulting composition was then dried in a cool room and ground to a predetermined particle size.

Workup

  1. customfor 15 minutes
  2. additionwere added to the batch
  3. customAfter about 10 minutes of reaction time (where the product
  4. additionwas added
  5. customuntil no further reaction
  6. customThe end result
  7. customOnce a fully reacted granular product was formed
  8. customThe resulting composition was then dried in a cool room and ground to a predetermined particle size

Sources & evidence

ORD record
ord-8769067acfb941b59d1328669d86bb6a
Source dataset
uspto-grants-2004_03
Patent number
US06706904B1

Linked notes

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