Linear Formula: t-Oct-C6H4-(OCH2CH2)xOH, x= 9-10, laboratory grade, Synonym: 4-(1,1,3,3-Tetramethylbutyl)phenyl-polyethylene glycol, t-Octylphenoxypolyethoxyethanol, Polyethylene glycol tert-octylphenyl ether. Triton-X has been used: In the permeabilization of cells for immunofluorescence staining. As a component of lysis buffer in western blot analysis. As a component of Tris-buffered saline for the preparation of cell sections in Immunogold labelling for electron microscope.