A feasible new preparation was reported for an octacarboxylphenyl functionalized spherosilicate, octakis[(pcarboxyphenyl) dimethylsilyl] silicate, which was a versatile monomer leading to other functional spherosilicate derivatives. The synthesis was started from octakis[pcarboxyohenyl) dimethyl] silicate, which was versatile monomer leading to other functional spherosilicate derivatives. The synthesis was started from octakis[dimethyl(p-methylphenyl)silyl]silicate. Octakis[dimethyl(p-methylphenyl)silyl]silicate was borminated by NBS to produce octakis[dimethyl(4-tribromomethylphenyl)silyl]silicate. Finally, octakis[dimethyl(4-tribromomethylphenyl)silyl]silicate was hydrolysed in the presence of AgNO3 and formic acid to give desired compound. Octakis[pcarboxyohenyl) dimethyl] silicate was fully characterized by FTIR, H-1 NMR, C-13 NMR, Si-29 NMR spectra, ESI-MS, and elemental analysis.