Isopropyl Alcohol

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isopropanol, isopropyl alcohol, or 2-propanol (īˌsəprōˈpənōl, īˌsəprōˈpĭl), (CH3)2CHOH, a colorless liquid that is miscible with water. It melts at −89℃ and boils at 82.3℃. It is poisonous if taken internally. It is a major component of rubbing alcohols. Isopropanol is a secondary alcohol. It is one of the cheapest alcohols and has replaced ethanol for many uses because of its similar solvent properties. Isopropanol is made commercially by dissolving propylene gas in sulfuric acid and then hydrolyzing the sulfate ester that is formed; the propylene is a byproduct of petroleum refining. Isopropanol was formerly obtained largely by catalytic reduction of acetone; oxidation of isopropanol is now the major source of acetone.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Isopropyl Alcohol


2-propanol, the simplest secondary aliphatic alcohol, CH3CH(OH)CH3.

Isopropyl alcohol is a colorless liquid with a characteristic odor. Melting point, — 89.5°C; boiling point, 82.4°C; density, 0.7851 g/cm3 (20°C); flash point, 11.7°C; lower volume explosive limit in air, 2.5 percent by volume (25“C). Isopropyl alcohol is miscible in all proportions with water and organic solvents, with water forming an azeotrope (87.9 percent isopropyl alcohol; boiling point, 83.38°C). Isopropyl alcohol has all the properties of a secondary aliphatic alcohol.

Industrially, isopropanol is made by the direct or sulfuric-acid hydration of propylene. The raw material is the propane-propylene cut of cracked gas or the propylene fraction of petroleum pyrolysis. Isopropyl alcohol is used chiefly in making acetone (by dehydrogenation or incomplete oxidation), as a solvent (for example, of essential oils and resins), and as a component in antifreeze mixtures.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

isopropyl alcohol

[¦ī·sə′prō·pəl ′al·kə‚hȯl]
(organic chemistry)
(CH3)2CHOH A colorless liquid that boils at 82.4°C; soluble in water, ether, and ethanol; used in manufacturing of acetone and its derivatives, of glycerol, and as a solvent. Also known as isopropanol; 2-propanol; sec-propyl alcohol.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Amongst these, isopropyl alcohol finds extensive application in the chemical industry as an intermediate and cleaning agent.
Based on the optimization of the trials, the abovementioned chromatographic conditions were finalized for the quantification of the acetone and isopropyl alcohol in tartaric acid-based pellets of dipyridamole modified release capsules.
As seen in Table-1, the acidic order for compounds 3a, 3b, 3c, 3d, 3g and 3i is: isopropyl alcohol Greater than N,N-dimethyl formamide Greater than t-butyl alcohol Greater than acetonitrile, for compounds 3f and 3h is: isopropyl alcohol Greater than t-butyl alcohol Greater than N,N-dimethyl formamide Greater than acetonitrile, for compound 3e is: isopropyl alcohol Greater than t-butyl alcohol Greater than N,N-dimethyl formamide Greater than acetonitrile.
What is the appropriate approach to this patient with an increased serum isopropyl alcohol result?
The isopropyl alcohol doesn't go into any paint products, said founder and president Scott Forrest.
safety goggles * measuring spoons * sugar * plastic bag that zips closed * food coloring * marker * 3 clear plastic cups * water * paper towels * isopropyl alcohol * vegetable oil * paper * pencil
The ready-to-use formula with isopropyl alcohol and a four-chain quaternary compound has a surface-contact time of five minutes to disinfect.
Hartley Wilprint will no longer need isopropyl alcohol in any stage of the printing process.
Isopropyl alcohol, sold as a disinfectant at drugstores ($4), is a mild solvent.
Ideal for protecting personnel, products and plants from the hazards of ammonia leaks, the Air Check Lite Ammonia Monitor provides highly reliable ammonia surveillance without danger of false alarms caused by R134a or R113 refrigerants, isopropyl alcohol, carbon monoxide, carbon dioxide, fruit/produce off-gases, propane fumes, or other substances.
The physical properties of isopropyl alcohol (IPA) versus water (Table 2) will significantly alter the required fluxing and preheating processes.
Shooters Choice makes some of the best gun cleaning products known to man and their latest is an aerosol degreaser containing heptane and isopropyl alcohol that will positively not hurt plastics but does a surprisingly effective job on goo.