Calcium Carbonate → Calcium Carbonate

HRID 576033Notes

Reaction equation

HRID 576033 reaction equation
[C:1](=[O:4])([O-:3])[O-:2].[Ca+2:5].[C:6]1([P:12](=[O:15])([OH:14])[OH:13])[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1>O>[C:1](=[O:2])([O-:4])[O-:3].[Ca+2:5].[C:6]1([P:12](=[O:13])([O-:15])[O-:14])[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.[Ca+2:5]

Participants

5

Reactant 2

HCID 10112Calcium CarbonateHCID 15295Phenylphosphonic Acid

Product 2

HCID 10112Calcium CarbonateHCID 20231666Calcium phenylphosphonate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

An aqueous slurry of calcium carbonate was prepared by charging a 300 mL reaction flask equipped with a stirrer with 10.0 g (100 mmol) of calcium carbonate (Escalon #2300 (average particle size, 1.7 μm), available from Sankyo Seifun KK) and 90.0 g of water. An aqueous solution of 15.8 g (100 mmol) of phenylphosphonic acid (Nissan Chemical Industries, Ltd.) dissolved in 89.5 g of water was gradually added dropwise at room temperature (about 25° C.) to this slurry with stirring, thereby effecting a reaction for one hour. The slurry was then filtered and the wet cake was thoroughly rinsed with water. The wet cake was subsequently dried at 200° C. for at least 12 hours, yielding a white powder of calcium phenylphosphonate. FIG. 4 shows a micrograph taken with a field-emission scanning electron microscope (SEM: JSM-7400F, manufactured by JEOL Ltd.) of the white powder of calcium phenylphosphonate thus obtained.

Workup

  1. customa 300 mL reaction flask
  2. additionwas gradually added dropwise at room temperature (about 25° C.) to this slurry
  3. customa reaction for one hour
  4. filtrationThe slurry was then filtered
  5. washthe wet cake was thoroughly rinsed with water
  6. customThe wet cake was subsequently dried at 200° C. for at least 12 hours

Sources & evidence

ORD record
ord-0bf7f63e1228423f8d146f44f5fca572
Source dataset
uspto-grants-2015_05
Patent number
US09035100B2

Reaction notes

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