Iso-Amyl alcohol

Ghloropentane. Use the quantities given in the previous preparation, but substitute 22 g. (27 ml.) of methyl n-propyl carbinol (b.p. 118-5°) for iso-amyl alcohol. Collect the 2-chloropentane at 96-98°. 

CAS Registry Number common name [71-41-0] -amyl alcohol [6032-29-7] j -amyl alcohol [584-02-1] [137-32-6] [123-51-3] iso amyl alcohol [75-85-4] / fZ-amyl alcohol [598-75-4] [75-84-3] neopentyl alcohol... 

Flynn and Meeham [55] have described a solvent extraction phosphomolyb-date method using iso-amyl-alcohol for monitoring the concentration of 32-phosphorus in sea and coastal waters near nuclear generating stations. 

From synthetic iso-amyl alcohol, t From fermentation iso-amyl alcohol. 

Iso-amyl alcohol is oxidised to iso-valeric acid, and glycol2 gives glycollic acid, trioxymethylene, and a sugar-like substance. 

Methyl-l-butanol (iso-Amyl alcohol) 123513 Sigma Aldrich... 

The i-methyl-2-pyridone is salted out of the reaction mixture by the addition of 400-500 g. of anhydrous sodium carbonate to the well-stirred solution. When no more of the sodium carbonate dissolves, the stirring is discontinued and the yellow or brown oily layer containing most of the desired pyridone, together with some of the unreacted pyridinium salt, water, and inorganic salts, is separated from the aqueous mixture. The aqueous mixture is filtered (Note 2) to remove the excess sodium carbonate and the precipitated potassium or sodium ferrocyanide. The filtrate is divided into three portions, each of which is extracted twice with 200-cc. portions of technical iso-amyl alcohol (Note 3). The alcohol used for the second extraction of the first aqueous portion is satisfactory for the first extraction of a second aqueous portion, et cetera, so that a total volume of 800 cc. is used. The iso-amyl alcohol extracts are combined and added to the oily layer which was first separated from the reaction mixture. An aqueous layer usually appears and is separated and extracted with another 100-cc. portion of amyl alcohol. 

When equal volumes of water, technical iso-amyl alcohol, and a little pyridone are shaken together, the pyridone is found to be about equally distributed between the two solvents. Chloroform is also satisfactory for the extraction of pyridone from water. 

Cassel s results indicate gaseous films, the hydrocarbons giving the same direction of curvature as above, i.e. a preponderance of the 6 correction in the van der Waals type of equation but the lower alcohols and nitromethane showed opposite curvature in the F-p2 curves, except at very high pressures this indicates strong lateral adhesion the F-A relations for the adsorbed films, deducible from his results, indicate association into double molecules even at great dilutions. Butyl and iso-amyl alcohols formed adsorbed films intermediate in properties between the lower alcohols and the hydrocarbons. No lowering of tension at all was observed with water. Cassel s results differ considerably from those of other workers since the surface tension of his supposedly clean mercury was some 25 dynes lower than the best values of several other workers, and since no adsorption of water was found, there may have been a considerable amount of contamination initially on the mercury. 

It is preferable to use iso-amyl alcohol because the odour of the resulting iso-amyl acetate is more readily distinguished from the alcohol itself than is the case with ethanol. It is as well to run a parallel test with a known acetate and to compare the odours of the two products. 

Kablukov, LA., Malischeva, V.T. (1925) The volumetric method of measurement of the mutual solubility of liquids. The mutual solubihty of the systems ethyl ether-water and iso-amyl alcohol-water. J. Am. Chem. Soc. 47, 1553-1561. 

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