isopropanol


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isopropanol,

 

isopropyl alcohol,

or

2-propanol

(ī'səprō`pənōl, ī'səprō`pĭl), (CH3)2CHOH, a colorless liquid that is miscible with water. It melts at −89°C; and boils at 82.3°C;. It is poisonous if taken internally. It is a major component of rubbing alcohols. Isopropanol is a secondary alcoholalcohol,
any of a class of organic compounds with the general formula R-OH, where R represents an alkyl group made up of carbon and hydrogen in various proportions and -OH represents one or more hydroxyl groups.
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. 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 acetoneacetone
, dimethyl ketone
, or 2-propanone
, CH3COCH3, colorless, flammable liquid. Acetone melts at −94.8°C; and boils at 56.2°C;. It is the simplest aliphatic ketone.
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; oxidation of isopropanol is now the major source of acetone.
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isopropanol

[¦ī·sə′prō·pə‚nȯl]
(organic chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Ascorbic acid (BDH), methylene green (Fluka with purity of 99.99%), methanol, ethanol and isoproponol (Merck) were purchased to prepare the solutions in aqueous, aqueous methanol, aqueous ethanol and aqueous isopropanol. These solutions were prepared by using double distilled water having conductivity 1.0 x10-6 uS.cm-1.
1: List of all proficiency chemicals used in this study to evaluate the performance of the h-CLAT adapted to animal-product-free conditions Proficiency substance CAS number 2,4-Dinitrochlorobenzene 97-00-7 4-Phenylenediamine 106-50-3 Nickel sulphate 10101-97-0 2-Mercaptobenzothiazole 149-30-4 R(+)-Limonene 5989-27-5 Imidazolidinyl urea 39236-46-9 Isopropanol 67-63-0 Glycerol 56-81-5 Lactic acid 50-21-5 4-Aminobenzoic acid 150-13-0 Tab.
'However, six months after the elimination of the stock, a Swiss firm was able to export five metric tons of isopropanol to Syria without any opposition from the Swiss authorities,' RTS said on Tuesday.
The dissolved sample was titrated with 0.1 mol [L.sup.-1] KOH in isopropanol (ASTM D664) or ethanol (EN 14104), standardized against benzoic acid (Sigma Aldrich, 99.9%).
Based on the above analysis, it could be concluded that the reduction trends of [K.sub.app] were quite close in the presence of 0.1 mol/L of isopropanol, 0.01 mol/L of KBr, and 0.01 mol/L of Na[N.sub.3].
Imposing the fine, Judge Colin Burn said the keeping of substances such as isopropanol in plastic buckets near to work stations was "an unsatisfactory state of affairs." He said it was not clear what exactly happened at the time of the accident, but at the end of it Mr Hirst was covered essentially "head to toe" in flames which were put out by an employee with a fire extinguisher.
Povidone-iodine, potassium permanganate, bezalkonium and cetylpiridinium chlorides, ethanol, Chlorhexidine digluconate, phenol, isopropanol and formaldehyde were highly effective against S.
From there, bacteria in the leaf take over, pairing the hydrogen with carbon dioxide to create isopropanol liquids.
Methyl methacrylate (MMA, [greater than or equal to] 99.0%), n-butyl acrylate (BA, [greater than or equal to] 99.0%), acrylic acid (AA, [greater than or equal to] 99.5%), sodium dodecyl sulfate (SDS, analytical pure), polyethylene glycol-400 (PEG-400, number molecular weight 380420 g/mol), ammonia water (25-28%, aq.), ammonium persulfate (APS, [greater than or equal to] 98.0%), and all necessary alcohols, i.e., ethanol ([greater than or equal to] 99.7%), isopropanol ([greater than or equal to] 99.7%), n-propanol ([greater than or equal to] 99.0%), and ethylene glycol ([greater than or equal to] 99.0%) from Sinopharm Chemical Reagent Co., Ltd.
The amount of formazan product was evaluated in the end-point reactions terminated with acidic isopropanol or in the continuous reactions run in the presence of low detergent concentrations.
They also heard that isopropanol, a chemical used in cleaning products, was found to be in the liquid when it was analysed.