An object of the present invention is to provide a chemical adsorbent for an acidic gas that can have high chemical adsorption ability and excellent resistance to resin deterioration. A chemical adsorbent for an acidic gas of the present invention includes an amorphous zirconyl hydrate represented by Formula (1) below, as main component, and a deodorizing processed product of the present invention applied or kneaded the chemical adsorbent for an acidic gas of the present invention. (ZrO)1-x(HfO)x(OH)y･zH2O (1) In Formula (1), x, y, and z denote a positive number, x is 0.0001 to 0.005, y is 1.9 to 3.0, and z is 0.05 to 1.0.本發明提供一種化學吸附性能高且不會產生樹脂劣化的酸性氣體用化學吸附劑，並提供使用該吸附劑而發揮優異除臭性能的紙、不織布及纖維等除臭加工製品。酸性氣體用化學吸附劑係將下述式(1)所示非晶質氫氧化氧鋯作為主成分，除臭加工製品係塗佈或混練加工有前述酸性氣體用化學吸附劑而成者。 (ZrO)1-x(HfO)x(OH)y．zH2O (1) 式(1)中，x、y及z為正數，且為滿足x=0.0001~0.005、y=1.9~3.0、z=0.05~1.0的數。
