A study has been made of the effect of chlorine on the tensile strength, tear strength, and crease resistance of mercerized, 80 × 80, 39-in., 4.00-weight, white cotton cloth treated with three types of thermosetting resins, one of which was a straight urea- formaldehyde type, another belonged to the melamine-formaldehyde group, and the re maining was of the imidazolidone-formaldehyde class. Included in this work is the effect of sodium bisulfite on the aforementioned physical properties of the prescribed fabric treated with the indicated resins and subsequently subjected to chlorine treatment.