31. The NIOSH immediately dangerous to life and health limit for ozone is smaller than the IDLH for ethylene oxide . 32. Merrill's ideas on poly ( ethylene oxide ) ( PEO ) as a non-thrombogenic biomaterial ( 1979 with Saltzman) 33. Propylene oxide and / or ethylene oxide is added to the initiators until the desired molecular weight is achieved. 34. The far slower gas-based systems, most of which use ethylene oxide , take a day or more to sanitize mail. 35. However, heat treatment can destroy the flavour of certain foodstuff like spices while ethylene oxide is an ozone depleter. 36. Many homograft valves are sterilized with ethylene oxide or irradiation methods recognized to have deleterious effects on valve performance. 37. In the conventional method, decontamination is achieved by either heat treatment or gas ( for example, ethylene oxide ) fumigation. 38. Other methods of ethylene oxide detection are color reactions with pyridine derivatives and hydrolysis of ethylene glycol with periodic acid. 39. All three technologies are suitable for ethylene oxide , but only electrochemical sensors are used for hydrogen peroxide and ozone detection. 40. The chemical reactivity that is responsible for many of ethylene oxide 's hazards has also made it a key industrial chemical.
