Polyvinyl butyral films mixed with xylenol blue (XB) indicator and hexachloroethane (HCE) were prepared for possible application in food irradiation. Upon c-irradiation the films undergo visual color change from yellow (XB, pH 8) to red (XB, pH 2.8) by H ? formation in the presence of HCE. The dosimetric characteristics of films containing different dye and HCE concentrations were investigated spectrophotometrically at k max 555 nm. Radiation sensitivity is enhanced with HCE and, accordingly red color intensity. The prepared films can be applicable in dose range 0.25-10 kGy with uncertainty of dose reaching 4.45 % at 1r.