PURPOSE: To obtain a calcium dispersion, good in stability and hardly forming precipitates even when preserved for a long period by preparing fine calcium oxide particles from a sparingly water-soluble or water-insoluble calcium salt and a hydroxy acid, adding a hydrophilic emulsifying agent thereto and carrying out the dispersing treatment.
CONSTITUTION: This stable calcium dispersion is obtained by mixing and stirring a sparingly water-soluble or a water-insoluble calcium salt (calcium carbonate, etc.) and a hydroxy acid (citric acid) in a dispersion medium, producing a hydroxy acid salt of calcium having ≤1μm average particle diameter, then adding a hydrophilic emulsifying agent having ≥10HLB thereto and carrying out the dispersing treatment for 20-30min with a usual dispersing machine.
ARAI TERUO
NAKATSUBO TADASHI