These compounding ingredients are used in effective amounts by weight to control color, mildew, stabilization to ultra-violet light and heat, viscosity and so forth of the plasticized vinyl chloride polymer. [0033] The vinyl chloride polymer composition may contain suitable blowing or foaming agents such as sodium bicarbonate, and the organic agents like 1,1-azobisformamide, 4,4-oxybis (benzene su