Utshwala obunokuxutshwa kwe 75% ijwayele ukuqhuma lapho ichayeke elangeni. Ukuba uketshezi oluvuthayo, ine-flash point engu-20°C, nasehlobo, izinga lokushisa langaphandle lingakhuphuka libe ngaphezu kuka-40°C, kwandisa kakhulu ingozi yokuvutha kotshwala ngokuzenzakalelayo nokuqhuma elangeni.
Ukugcina ngokuphepha 75% utshwala, kufanele igcinwe endaweni epholile, indawo enomoya omuhle lapho izinga lokushisa lingeqi ku-30°C. Isitsha sidinga ukuvalwa ngokuvikelekile futhi sigcinwe ngokuhlukana nama-oxidizer, ama-asidi, izinsimbi ze-alkali, kanye nama-amine ukuvimbela noma yikuphi ukusebenzisana okuyingozi. Kuyelulekwa ukuthi kusetshenziswe izibani ezingaqhumi kanye nezinhlelo zokungenisa umoya, kanye nokuvinjelwa okuqinile kwemishini namathuluzi angadala izinhlansi.