Please forward this error screen to 69. Not to be confused with Ethenol, also known as ethanol production process pdf alcohol ph of alcohol is 6. Ethanol is a volatile, flammable, colorless liquid with a slight characteristic odor.
Ethanol is naturally produced by the fermentation of sugars by yeasts or via petrochemical processes, and is most commonly consumed as a popular recreational drug. The name ethanol was coined as a result of a resolution that was adopted at the International Conference on Chemical Nomenclature that was held in April 1892 in Geneva, Switzerland. Ethanol is used in medical wipes and most common antibacterial hand sanitizer gels as an antiseptic. Ethanol may be administered as an antidote to methanol and ethylene glycol poisoning.
Ethanol, often in high concentrations, is used to dissolve many water-insoluble medications and related compounds. Ethyl Alcohol is extensively metabolized by the liver, particularly via the enzyme CYP450. Ethyl Alcohol increases the secretion of acids in the stomach. The metabolite acetaldehyde is responsible for much of the short term, and long term effects of ethyl alcohol toxicity. As a central nervous system depressant, ethanol is one of the most commonly consumed psychoactive drugs. The largest single use of ethanol is as an engine fuel and fuel additive.
Brazil in particular relies heavily upon the use of ethanol as an engine fuel, due in part to its role as the globe’s leading producer of ethanol. USP grade ethanol for laboratory use. Ethanol has been used as rocket fuel and is currently in lightweight rocket-powered racing aircraft. According to an industry advocacy group, ethanol as a fuel reduces harmful tailpipe emissions of carbon monoxide, particulate matter, oxides of nitrogen, and other ozone-forming pollutants. Ethanol combustion in an internal combustion engine yields many of the products of incomplete combustion produced by gasoline and significantly larger amounts of formaldehyde and related species such as acetaldehyde. In the United States, the ethanol fuel industry is based largely on corn. According to the Renewable Fuels Association, as of 30 October 2007, 131 grain ethanol bio-refineries in the United States have the capacity to produce 7.
Sweet sorghum is another potential source of ethanol, and is suitable for growing in dryland conditions. Ethanol’s high miscibility with water makes it unsuitable for shipping through modern pipelines like liquid hydrocarbons. Commercial fuel cells operate on reformed natural gas, hydrogen or methanol. Ethanol is an attractive alternative due to its wide availability, low cost, high purity and low toxicity. Ethanol fireplaces can be used for home heating or for decoration. Ethanol is an important industrial ingredient. It has widespread use as a precursor for other organic compounds such as ethyl halides, ethyl esters, diethyl ether, acetic acid, and ethyl amines.
Ethanol is miscible with water and is a good general purpose solvent. It is found in paints, tinctures, markers, and personal care products such as mouthwashes, perfumes and deodorants. For the same reason, it is also used as the active fluid in alcohol thermometers. Ethanol is a volatile, colorless liquid that has a slight odor. It burns with a smokeless blue flame that is not always visible in normal light. The physical properties of ethanol stem primarily from the presence of its hydroxyl group and the shortness of its carbon chain. Ethanol is slightly more refractive than water, having a refractive index of 1.
Ethanol-water mixtures have less volume than the sum of their individual components at the given fractions. Mixing equal volumes of ethanol and water results in only 1. Hydrogen bonding causes pure ethanol to be hygroscopic to the extent that it readily absorbs water from the air. The addition of even a few percent of ethanol to water sharply reduces the surface tension of water. This property partially explains the “tears of wine” phenomenon. When wine is swirled in a glass, ethanol evaporates quickly from the thin film of wine on the wall of the glass.
This is called its flash point. The flash point of pure ethanol is 16. Dishes using burning alcohol for culinary effects are called Flambé. Ethanol is a byproduct of the metabolic process of yeast. As such, ethanol will be present in any yeast habitat. Ethanol can commonly be found in overripe fruit. Ethanol produced by symbiotic yeast can be found in bertam palm blossoms.
Ethanol is produced both as a petrochemical, through the hydration of ethylene and, via biological processes, by fermenting sugars with yeast. CO2 can also be used as the raw material. CO2 can be converted using such organisms as Clostridium ljungdahlii, Clostridium autoethanogenum or Moorella sp. CO2 can be converted using electrochemical reactions at room temperature and pressure.