SILICA GEL CONTAINING INSOLUBILIZED REAGENT* ITS MANUFACTURE AND METHOD OF ANALIZING AQUEOUS SOLUTION OR SELECTIVELY AND PREPARATORILY SEPARATING CATION AND*OR ANION

摘要

A dried silica gel containing a reagent in insolubilized form which reagent is normally soluble, especially a dried silica gel containing an insolubilized form of a normally soluble colorimetric analytical agent and a method of preparing such dried silica gel by hydrolyzing a silane having from 1 to 4 alkoxy groups in a homogeneous phase in the presence of a reagent which is normally soluble in a solvent, recovering the resultant gel and drying the same.