PROBLEM TO BE SOLVED: To perform deodorization by eluting, decomposing, and removing a half-dry odor and a body odor remaining in a gap between cloth fibers of white underwear mainly made of cellulose-based natural fiber and polyester fiber, shirts, protective work clothing, monochrome socks, and the like.SOLUTION: A monochloramine aqueous solution/base deodorant having a stable high concentration of effective chlorine of 100-2,000 mg/L is prepared by adding alkylamine oxide and ammonia or an ammonium salt to a hypochlorite aqueous solution. An auxiliary deodorant is prepared by further adding sodium percarbonate powder of a weight same as or less than the effective chlorine or an equal or less amount of a sodium percarbonate aqueous solution of an active oxygen concentration of 20-500 mg/L. Deodorization is conducted by immersing a deodorization target in the deodorant or spraying the aqueous solution to the deodorization target.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】セルロース系天然繊維やポリエステル繊維を主体として成る白物下着、ワイシャツ、作業用防護服及び単色靴下等の織物繊維の隙間に残った「生乾き臭」及び衣類に染み込んだ「体臭」を溶出及び分解除去して無臭化する。【解決手段】次亜塩素酸水溶液にアルキルアミンオキシド及びアンモニア又はアンモニウム塩を各加えた処方により有効塩素濃度100~2,000mg/Lで高濃度安定化させたモノクロラミン水溶液・消臭基剤の調製方法。更に有効塩素含有量と等重量以下になる過炭酸ナトリウムの粉末、又は、活性酸素濃度20~500mg/Lの過炭酸ナトリウム水溶液を等量以下加えた消臭副剤の調製方法。該消臭剤に被処理物を浸漬又は該水溶液を被処理物に向けて噴霧して消臭する。【選択図】図1