T 1562 (OTTO) Tris(trimethylsilyl) phosphate, ≥98% Cas 10497-05-9 - used for the mild preparation of bis(TMS) phosphonates (Arbuzow reaction). T 1562 (OTTO) Tris(trimethylsilyl) phosphate, ≥98% Cas 10497-05-9 - used in organic synthesis, pharmaceuticals, agrochemicals and dyestuffs.