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C2H4O ethylene oxide EO

CAS NO 75-07-0
UN NO 1040
EINECS NO
200-849-9
Molecular weight 44.05
Appearance

Colorless liquid, ether, soluble in water and organic solvents

Melting point 111°C
Boiling point  10.7°C
Density

0.882

DOT Class  2.1
Label flammable gas
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Description

Ethylene oxide is an organic compound with the formula C2H4O. 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. Because it is a strained ring, ethylene oxide easily participates in a number of addition reactions that result in ring-opening. Ethylene oxide is isomeric with acetaldehyde and with vinyl alcohol. Ethylene oxide is industrially produced by oxidation of ethylene in the presence of silver catalyst.
The reactivity that is responsible for many of ethylene oxide’s hazards also makes it useful. Although too dangerous for direct household use and generally unfamiliar to consumers, ethylene oxide is used for making many consumer products as well as non-consumer chemicals and intermediates. These products include detergents, thickeners, solvents, plastics, and various organic chemicals such as ethylene glycol, ethanolamines, simple and complex glycols, polyglycol ethers, and other compounds. Although it is a vital raw material with diverse applications, including the manufacture of products like polysorbate 20 and polyethylene glycol (PEG) that are often more effective and less toxic than alternative materials, ethylene oxide itself is a very hazardous substance. At room temperature it is a very flammable, carcinogenic, mutagenic, irritating, and anaesthetic gas.
Ethylene oxide is a surface disinfectant that is widely used in hospitals and the medical equipment industry to replace steam in the sterilization of heat-sensitive tools and equipment, such as disposable plastic syringes. It is so flammable and extremely explosive that it is used as a main component of thermobaric weapons; therefore, it is commonly handled and shipped as a refrigerated liquid to control its hazardous nature.

Application

Ethylene oxide is one of the most important raw materials used in large-scale chemical production. Most ethylene oxide is used for synthesis of ethylene glycols, including diethylene glycol and triethylene glycol, that accounts for up to 75% of global consumption.

Ethylene oxide is one of the most commonly used sterilization methods in the healthcare industry because of its non-damaging effects for delicate instruments and devices that require sterilization, and for its wide range of material compatibility.It is used for instruments that cannot tolerate heat, moisture or abrasive chemicals, such as electronics, optical equipment, paper, rubber and plastics.

Industrial Grade

Specification30%-90%
EO30%-90%
CO270%-10%
Other Grades and Purity Available on Asking
ItemsUnitQualityResultMethods
EO %v/v≥99.999.94气相色谱法
H2Om1/m3≤0.010.0008Coulometry
Acetaldehydem1/m3≤1≤0.003Coulometry
COm1/m3≤0.5≤0.001Coulometry
CH3COOHm1/m3≤0.002≤0.002Coulometry
Hm1/m3≤5.0≤5.0Coulometry
 Om1/m3≤1.0≤1.0Coulometry
Chroma/Hazen unit (platinum – cobalt)m1/m3≤5.0≤5.0Coulometry
Other Grades and Purity Available on Asking

Package Information

纯度Cylinder CapacityWeightValve
99.9%(3N)8L5KgQF-2/QF-2C
99.9%(3N)40L25KgQF-2/QF-2C
99.9%(3N)100L70KgQF-10
99.9%(3N)300L235KgQF-10
99.9%(3N)600L300kgQF-10
99.9%(3N)800L600kgQF-10
Other Packages Available on Asking

Reference