Malic Acid → Dicalciumhydroxy malate

HRID 1830472Notes

Reaction equation

HRID 1830472 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 is 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. To ensure that the product does not over react when small amounts of water are added to the batch a water jacket is used. Next, about 1 L of water is slowly sprayed into the particulate mixture product. After about 10 minutes of reaction time (the product becomes spongy and rises, and then drops back to a more granular state), an additional 1 L of water is added. This is repeated several times until no further reaction appeared to be occurring upon addition of water. The end result is a granular product. Once a fully reacted granular product is formed, no additional water is added. The resulting composition is then dried in a cool room and ground to a predetermined particle size.

Workup

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

Sources & evidence

ORD record
ord-95a509aa0c104f0bae8305625bb414b1
Source dataset
uspto-grants-2006_06
Patent number
US07067165B2

Reaction notes

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