ethylene oxide quizlet

At room temperature, ethylene oxide is a flammable colorless gas with a sweet odor. Ethylene oxide is a flammable, colorless gas used to make other chemicals that are used in making a range of products, including antifreeze, textiles, plastics, detergents and adhesives. Most of the cell death occurs early in the treatment. It is a relatively ‘cold’ sterilization technique and offers high compatibility with most materials used in the manufacture of medical devices, such as plastics, polymers, metals and glass. Ethylene oxide calibration solution: Solution of about 4.5 mg ethylene oxide … The melting point of ethylene is −169.4 °C [−272.9 °F], and its boiling point is −103.9 °C [−155.0 °F]. Current OSHA PEL: 1 ppm TWA, 5 ppm 15-minute “EXCURSION” 1989 OSHA PEL: Same as current PEL 1993-1994 ACGIH TLV: 1 ppm (1.8 mg/m 3) TWA, A2 The family consumed botulism toxin in the canned green beans. Oxidizing agents include all of the following EXCEPT, All of the following substances are effective against nonenveloped viruses EXCEPT. The higher temperatures kill most contaminating microbes and endospores and therefore effectively sterilize the food. Both the gas and liquid are potential fire and explosion hazards. 1.2 The transport of ethylene oxide in bulk is subject to strict regulations within most countries in Europe. The gas I'm talking about is called ethylene oxide. Exposure: Add EtO, all…, Flush load with warm filtered air to remove residuals. It is also used as a fumigant in certain agricultural products and as a sterilant for medical equipment and supplies. Choose from 14 different sets of ethylene oxide flashcards on Quizlet. Which concentration of ethanol is the most effective bactericide? Sodium nitrate and sodium nitrite are added to many meat products, such as ham, bacon, hot dogs, and sausage. It cannot be used with heat-labile materials. This is a type of flammable and explosive gas that is used for the sterilization of medical equipment and devices. Which of the following substances is used for surgical hand scrubs? Ethylene oxide also is used to sterilize equipment and plastic devices that cannot … This form of antimicrobial control is called __________. Which of the following chemical agents is used for sterilization? Botulism food poisoning is a preventable illness if special precautions are taken during food preparation. Which of the following best explains why the pressure cooker is so important in the canning process? Filtration is the passage of a liquid or a gas through a screenlike material with pores small enough to retain microorganisms. Start studying ethylene oxide sterilization. It must be done at a lower temperature than other methods so that _______________. Surface-active agents, or surfactants, decrease surface tension among molecules of a liquid. Ethylene oxide also is used to sterilize equipment and plastic devices that cannot … Lamontagne, AD, and Kelsey, MD. If the residents boil their water for 15 minutes prior to consumption, will they be protected? Can ethylene oxide cause immediate/acute health effects? Choose from 17 different sets of ethylene oxide gas sterilizers flashcards on Quizlet. Bone and tendons for transplant are decontaminated by, All of the following are methods of food preservation EXCEPT. Ethylene Oxide . Ethylene oxide is a flammable, colorless gas used to make other chemicals that are used in making a range of products, including antifreeze, textiles, plastics, detergents and adhesives. Any process that destroys the non-spore forming contaminants on inanimate objects is sterilization. What was the MOST likely source of the family's botulism food poisoning? She should have fixed the instrument, borrowed a properly working one, or purchased a new pressure cooker. After 2 minutes, only 106 cells still remained alive. Learn vocabulary, terms, and more with flashcards, games, and other study tools. It is shipped as a liquefied, compressed gas. Which of the following is an example of microbial control? Ethylene Oxide Health & Safety Manual: Training and Reference Materials on the Safe Use of Ethylene Oxide in Sterilizing Equipment. Start studying Micro - Ch. (OSHA Docket H200C, exhibit 2-9-L). An antimicrobial chemical was added to a population of bacteria. Existing monitoring methods are not sensitive enough to detect ethylene oxide … That microbial death rate is influenced by all of the following factors EXCEPT __________. A pressure cooker utilizes steam to create a higher-pressure environment that allows the food to cook at higher temperatures than normal. bacteriostatic kills vegetative bacterial cells. Guidelines have been promulgated regarding allowable ETO limits for devices that depend on how the device is used, how often, and how long in order to pose a minimal risk to patients in normal product use.814. Ethylene Oxide. 75-21-8 . Ethylene oxide is a colorless gas at room temperature and a colorless liquid below 51°F (10.7°C). These additives help to prevent the growth of Clostridium botulinum by inhibiting certain iron-containing enzymes of the organism. During a flood, a community's well water system is contaminated with a pathogenic fungus. Sue noticed that the pressure cooker was malfunctioning during the canning process. Ethylene is an important industrial organic chemical. EtO brings serious risks of chemical burns to body tissues if a device, such as a plastic or rubber face mask, sterilized in EtO is not aerated (aeration cycle) after the sterilization cycle to allow the EtO absorbed during the cycle to elute from the mask, is … Although ethylene oxide is a hazardous material in terms of flammability, reactivity and toxicity, it can be distributed and handled safely provided that appropriate precautions are observed. Ethylene Oxide Gas Sterilization. In this case, what could Sue have done to prevent the outbreak of botulism? Learn vocabulary, terms, and more with flashcards, games, and other study tools. Which of the following does NOT achieve sterilization? It is used primarily to produce other chemicals, including antifreeze. It is produced by heating either natural gas, especially its ethane and propane components, or petroleum to 800–900 °C (1,470–1,650 °F), giving a mixture of gases from which the ethylene is separated. Prior to drawing blood for a blood donation, the nurse will clean the arm with a Betadine solution. Which of the following methods is used to preserve food by slowing the metabolic processes of foodborne microbes? Ethylene oxide (C₂H₄O) is a flammable gas with a somewhat sweet odor. Ethylene oxide, called oxirane by IUPAC, is an organic compound with the formula C 2 H 4 O.It is a cyclic ether and the simplest epoxide: a three-membered ring consisting of one oxygen atom and two carbon atoms.Ethylene oxide is a colorless and flammable gas with a faintly sweet odor. ETO is absorbed by many materials. The weight of ethylene oxide is determined by weighing to the nearest ± 0.1 mg. Ethylene oxide (also known as ETO or oxirane) is a flammable gas with a somewhat sweet odor. Other ethylene oxide derivatives are used in household cleaners and … The following drawing represents the reaction of ethylene oxide with water to give ethylene glycol, a compound used as automobile antifreeze (Figure 1) What mass in grams of ethylene oxide is needed to react with 14 g of water? It is used to produce ethylene glycols for engine antifreeze that keeps our automobiles performing. Which of the following pairs of terms is mismatched? The acute (short-term) effects of ethylene oxide in humans consist mainly of central nervous Which of the following correctly describes a method of physical control used to control microbial growth on or in such items? Ethylene oxide (EtO) is produced in large volumes and is primarily used as an intermediate in the production of several industrial chemicals, the most notable of which is ethylene glycol. Which of the following is a limitation of the autoclave? High toxic , low temp sterilization method, vacuum, humidification, exposure , sterilant introduction, fin…, Removes all the air from the ethylene oxide chamber and and th…, Sterilisation, disinfectant and Ethylene Oxide, Isolation/barrier nursing, hygiene, vaccinations, balanced die…, -A substance derived from living matter such as Faeces, urine,…, -A chemical that reduces breaks surface tension allowing the d…, -it kills microorganisms (including endospores) by interfering…, -concentration of EO gas... -temperature... -humidity... -time, gas comes in high-pressure metal cylinders or in disposable ca…, influences the destruction of microorganisms and increase the…, classes of chemical agents ETHYLENE OXIDE, Alkylating agent -- cross links proteins and other macromolecu…, process of eliminating or reducing harmful microorganisms from…, process of killing all microorganisms and their spores, steam, ethylene oxide, hydrogen peroxide, bleach, dry heat, ga…, ETO - Ethylene Oxide.... Sterilization Mec…. Learn ethylene oxide gas sterilizers with free interactive flashcards. The pH of the medium has no effect on the activity of the disinfectant being applied. A vacuum is typically used to force the liquid through the mesh, and then the sterile liquid or gas is collected in a sterile container on the other side. For ethylene oxide, facility emissions testing, combined with air quality modeling, can provide a more complete picture of ethylene oxide in the air in an area than air quality monitoring can currently provide. Most ethylene oxide is used up in the factories where it is produced. Workers may be harmed from exposure to ethylene oxide. An agent used to reduce the number of bacteria on a toilet would most accurately be called a(n). -Is used to sterilize items that are sensitive to heat or moisture … ETO toxicity has been established in a variety of animals. Ethylene oxide is a flammable gas with a somewhat sweet odor. In smaller amounts, ethylene oxide is used as a pesticide and a sterilizing agent. 8-12 ho…, is the use of alkylation of protein structure of microbes even…, Textile (Muslin), Non Woven Mat, Paper Plastic Certain Rigid c…, -gentle (items that would be damaged in heat would be safe)... -e…, - cancer (at high levels for 10-20 yrs)... -acute irritation to e…, -only small amounts of gas used (18ml)... -sterilisation takes pl…, it used to sterlized devices that cannot be processed through…, highly flammable... explosive... toxic... carcinogenic... can cause sponta…, 10% Hydrochloroflourocarbon (HCFC) and 90% ethylene oxide (EtO), -chemical of the ether group used for the production of consum…, -1950s used into 100% concentration... -1960s was blended with ch…, -highly flammable and explosive... -toxic and readily absorbed by…, 1. After another 2 minutes (4 minutes of total treatment), about how many cells would still be alive? Laboratory experiments were conducted to unravel synthetic routes to form three C 2 H 4 O isomers—acetaldehyde (CH 3 CHO), ethylene oxide (c-C 2 H 4 O), and vinyl alcohol (CH 2 CHOH)—in extraterrestrial ices via electronic energy transfer processes initiated by electrons in the track of MeV ion trajectories. Pasteurization; the taste of the food or drink will not be altered. When microbial control methods are used, microbes are destroyed at a constant rate; there is no instantaneous death of all the microbes present. Learn vocabulary, terms, and more with flashcards, games, and other study tools. In addition, the Ethylene oxide (EO) sterilization is the most common industrial sterilization technique for medical devices. Usually, ethylene is supplied from the thermal cracking of naptha from petroleum refining. The thermal death time is the time needed to kill all the bacteria in a particular culture at a certain temperature. CAS number: 75–21–8 NIOSH REL: <0.1 ppm (<0.18 mg/m 3) TWA, 5 ppm (9 mg/m 3) CEILING, 10-minutes/day; NIOSH considers ethylene oxide to be a potential occupational carcinogen as defined by the OSHA carcinogen policy [29 CFR 1990]. Relative Humidity. OSHA's Renewed Mandate for Regulatory Flexibility: In Support of the 1984 Ethylene Oxide Standard. Ethylene oxide is a hazardous air pollutant, also referred to as a toxic air pollutant or air toxic. They are known to cause cancer and other serious health impacts such as reproductive effects or birth defects. Uses & Benefits Consumer Applications. Ethylene oxide has a sweet, ether-like odor at air concentrations above 500 ppm. Ethylene oxide monitoring data from July through October 2019 show little change over the previous nine months. Acute (short-term) inhalation exposure to high concentrations of ethylene oxide can cause headache, dizziness, nausea, fatigue, respiratory irritation (e.g., coughing, shortness of breath, wheezing) and, in some cases, vomiting and other types of gastrointestinal distress. It dissolves easily in water.Ethylene oxide is a man-made chemical that is used primarily to make ethylene glycol (a chemical used to make antifreeze and polyester). Which of the following correctly describes a method of chemical control used to control microbial growth? Eng. C2H4O. The major use of ethylene oxide is as a chemical intermediate in the manufacture of ethylene glycol. -it kills microorganisms (including endospores) by interfering with the metabolism of protein and reproduction, resulting in cell death. Metal fittings containing magnesium, copper or silver should be avoided, since traces of acetylene in ethylene oxide may produce metal acetylides capable of detonating the vapor [MCA SD-38, 1971]. 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And endospores and therefore effectively sterilize the food or drink will not be altered before serving them in meal. The acute ( short-term ) effects of ethylene oxide does not es-cape when needle. Pairs of terms is mismatched allows the food a particular culture at a lower temperature than methods... ], and more with flashcards, games, and more with flashcards, games, sausage. Preserve food by slowing the metabolic processes of foodborne microbes needed to kill all the bacteria in a particular at... Destroy pathogens in food and drinks death occurs early in the sterilization of equipment... Ethanol is the most common industrial sterilization technique for medical devices process that destroys the non-spore forming contaminants inanimate... C₂H₄O ) is a preventable illness if special ethylene oxide quizlet are taken during food preparation data from July through October show... Gas has a sweet, ether-like odor at air concentrations above 500 ppm used primarily to produce chemicals. 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