This devise is a designed to be easy to use on formalin fumigation gas generating device, an excellent sterilization of formaldehyde gas in everyday life. Formaldehyde fumigation gas generating device according to an embodiment of the present design is to insert a formaldehyde and permanganate drug filter and drug filter a packing potassium mounting a medicament reaction passage drug filter to Kane chemical reaction with in it inserted in the drug reaction folk and consists of a reaction tube with lid for sealing, by inserting and sealing the medicament filter the reaction folk, and characterized in that to formaldehyde and permanganate potassium is reacted fumigation gas is generated, another formaldehyde fumigation gas generating apparatus formalin pass formalin characterized in that is is unemployed captive packed permanganate potassium bag contained in a permanganic acid potassium passage to be inserted to the inside on the cylinder permanganate potassium barrel by pressing the permanganate potassium barrel when in close contact passing formalin configured to generate a fumigation gas reacts with the chemical formalin as permanganate potassium It shall be.; Use of formalin fumigation gas generating apparatus according to the present invention when using the high disinfection of formaldehyde gas can be disinfected, such as confined space and the air conditioning vent in the bathroom, warehouse, bathroom, car dome light, and by using a plastic bag or airtight box shoes, appliances, etc. it is possible to be used for disinfection of daily necessities and especially for disinfecting footwear to odors, as well as athlete's foot, eczema and kill germs in shoe to disease prevention.
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