In this work, conductive poly(2-ethyl aniline) (PEAn)/talc composite was prepared in the hydrochloric (HCl) medium by chemical polymerization of 2-ethyl aniline in the presence of talc using ammonium persulfate (APS) as oxidant. The effects of APS/EAn mole ratio on conductivity and PEAn amount of the PEAn/talc composite were investigated. The highest conductivity and the polymer yield of PEAn/Talc composite were obtained as 36.6% PEAn and 2.6x10(-7) S/cm, respectively. The structural, morphological and thermal properties of the conductive composites were characterized by using XRD, TGA, SEM and BET techniques. TGA results showed that the composite exhibited higher thermal stability than pure PEAn component.