Calcium → Citrate

HRID 1586623Notes

Reaction equation

HRID 1586623 reaction equation
[C:1]([O-:9])(=[O:8])[CH:2]([CH2:4][C:5]([O-:7])=[O:6])[OH:3].[C:10]([OH:22])(=[O:21])[CH2:11][C:12]([CH2:17][C:18]([OH:20])=[O:19])([C:14]([OH:16])=[O:15])[OH:13].[Ca+2].[Ca]>>[C:10]([O-:22])(=[O:21])[CH2:11][C:12]([CH2:17][C:18]([O-:20])=[O:19])([C:14]([O-:16])=[O:15])[OH:13].[C:1]([O-:9])(=[O:8])[CH:2]([CH2:4][C:5]([O-:7])=[O:6])[OH:3]

Participants

4

Reactant 2

HCID 5460341CalciumHCID 86746885HCID 86746885, compound

Product 2

HCID 31348CitrateHCID 160434DL-Malate

Procedure

Japanese patent application Sho 56/097,248 (Tanaka, 1981) discloses a calcium citrate malate salt of increased solubility. This salt is a 5:2:2 ratio of calcium:citrate:malate, formed by mixing calcium carbonate with citric and malic acids in water at 50° C. to 60° C. and separating the white crystalline material from the mother liquor. When the product is dry (oven drying is used), the temperature is raised to 110° C. -120° C. to sterilize the powder.

Sources & evidence

ORD record
ord-23b1c427dd644586baa3084ac67649a9
Source dataset
uspto-grants-1993_06
Patent number
US05215769

Reaction notes

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