Carbon Dioxide → HCID 86742807, compound

HRID 1194279Notes

Reaction equation

HRID 1194279 reaction equation
[C:1]([O-:13])(=[O:12])[CH2:2][C:3]([CH2:8][C:9]([O-:11])=[O:10])([C:5]([O-:7])=[O:6])[OH:4].[Ca+2:14].[C:15]([O-:27])(=[O:26])[CH2:16][C:17]([CH2:22][C:23]([O-:25])=[O:24])([C:19]([O-:21])=[O:20])[OH:18].[Ca+2].[Ca+2].[C:30]([OH:42])(=[O:41])[CH2:31][C:32]([CH2:37][C:38]([OH:40])=[O:39])([C:34]([OH:36])=[O:35])[OH:33].C(=O)([O-])[O-].[Ca+2].C(=O)=O>O>[C:1]([O-:13])(=[O:12])[CH2:2][C:3]([CH2:8][C:9]([O-:11])=[O:10])([C:5]([O-:7])=[O:6])[OH:4].[Ca+2:14].[C:15]([O-:27])(=[O:26])[CH2:16][C:17]([CH2:22][C:23]([O-:25])=[O:24])([C:19]([O-:21])=[O:20])[OH:18].[Ca+2:14].[Ca+2:14].[C:30]([OH:42])(=[O:41])[CH2:31][C:32]([CH2:37][C:38]([OH:40])=[O:39])([C:34]([OH:36])=[O:35])[OH:33]

Participants

6

Reactant 4

HCID 280Carbon DioxideHCID 311Citric Acid3×HCID 10112Calcium CarbonateHCID 13136Tricalcium Citrate

Product 1

HCID 86742807HCID 86742807, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

Calcium citrate with excess citric acid was prepared as follows. Specific amounts of calcium carbonate and citric acid at a molar ratio of 3:2 (i.e., 1.5) were thoroughly mixed. Warm water (50° C.-80° C.) was gradually added with agitation to form a hydrated mixture cnntaining about 40 weight percent water. Agitation was continued until CO2 evolution had apparently ceased. Additional amounts of citric acid were then added and thoroughly mixed to produce the calcium/citrate molar ratios shown in Table 4 (Example 12). The tricalcium dicitrate and tricalcium dicitrate-citric acid compositions were then dried at 60° C. to 80° C. to a moisture content of less than about 5 weight percent.

Workup

  1. customto form a hydrated mixture
  2. additionthoroughly mixed

Sources & evidence

ORD record
ord-3f4815e36403407e8cefb283d3d4742d
Source dataset
uspto-grants-1989_03
Patent number
US04814177

Reaction notes

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