Esters 7?-propyl acetate

All the spectroscopic approaches applied for structural characterization of mixtures derive from methods originally developed for screening libraries for their biological activities. They include diffusion-ordered spectroscopy [15-18], relaxation-edited spectroscopy [19], isotope-filtered affinity NMR [20] and SAR-by-NMR [21]. These applications will be discussed in the last part of this chapter. As usually most of the components show very similar molecular weight, their spectroscopic parameters, such as relaxation rates or selfdiffusion coefficients, are not very different and application of these methodologies for chemical characterization is not straightforward. An exception is diffusion-edited spectroscopy, which can be a feasible way to analyze the structure of compounds within a mixture without the need of prior separation. This was the case for the analysis of a mixture of five esters (propyl acetate, butyl acetate, ethyl butyrate, isopropyl butyrate and butyl levulinate) [18]. By the combined use of diffusion-edited NMR and 2-D NMR methods such as Total Correlation Spectroscopy (TOCSY), it was possible to elucidate the structure of the components of this mixture. This strategy was called diffusion encoded spectroscopy DECODES. Another example of combination between diffusion-edited spectroscopy and traditional 2-D NMR experiment is the DOSY-NOESY experiment [22]. The use of these experiments have proven to be useful in the identification of compounds from small split and mix synthetic pools. 

Acetic acid, propyl ester propyl acetate CH3-C00-(CH2)2-CH3 2544, 4249 172a, 174b, 1053, 1590, 2339a, 2389, 2544, 3266, 4249 ... 

Acetic acid, propyl ester propyl acetate CH3-C00-(CH2)2-CH3 172a 174a, 174b... 

SYNONYMS 1-acetoxypropane, ethanoic acid propyl ester, propyl acetate, n-propyl ester of acetic acid, propyl ethanoate. 

Benzophenol Carbolic Acid Hydroxybenzene Phenol Butyl Butyrate Dibutyl Sebacate Sebacic Acid Dibutyl Ester Propyl Acetate n-Pentane Butyl Chloride 1-Chlorobutane 1-Amlnobutane... 

Pressure sensitive and contact adhesives are made from a variety of polymers including acrylic acid esters, polyisobutylene, polyesters, polychloroprene, polyiuethane, silicone, styrene-butadiene copolymer and natural rubber. With the exception of acrylic acid ester adhesives which can be processed as solutions, emulsions, UV curable, 100% solids, and silicones (which may contain only traces of solvents), all remaining rubbers are primarily formulated with substantial amounts of solvents such as hydrocarbon solvents (mainly heptane, hexane, naphtha), ketones (mainly acetone and methyl ethyl ketone), esters (propyl acetate), and aromatic solvents (mainly toluene and xylene). 

Methyl, ethyl, n-propyl, isopropyl, n-hutyl, benzyl, cyclohexyl esters of formic, acetic, oxalic, succinic, tartaric, citric, benzoic, salicylic (and other substituted benzoic acids), phthalic and cinnamic acids phenyl esters of acetic, benzoic and salicylic acids. 

Ketones and esters are required for C-type inks. Types of esters are ethyl acetate, isopropyl acetate, normal propyl acetate, and butyl acetate. From the ketone class, acetone or methyl ethyl ketone (MEK) can be used. The usual solvent for D-type inks are mixtures of an alcohol, such as ethyl alcohol or isopropyl alcohol, with either aUphatic or aromatic hydrocarbons. Commonly used mixtures are 50/50 blends by volume of alcohol and aUphatic hydrocarbon. 

Acetate Esters Methyl acetate Ethyl acetate Propyl acetate Isopropyl acetate Butyl acetate Isobutyl acetate Amyl acetate... 

Chemical Designations - Synonyms Acetic acid, isobutyl ester 2-Methyl-1-propyl acetate beta-Methylpropyl ethanoate Chemical Formula CH3COOCHjCH(CH3)2. 

Chemical Designations - Synonym Acetic acid, isopropyl ester 2-Propyl acetate Chemical Formula CH3COOCH(CH3)j. 

FIGURE 27.6 T-peel strength values of chlorinated styrene-hutadiene mhher (SBR)/polyurethane adhesive joints as a function of the ester used to prepare the 2 wt% trichloroisocyanuric acid (TCI) solution. EA = ethyl acetate PA = propyl acetate BA = hutyl acetate. (From Ramero-Sanchez, M.D., Pastor-Bias, M.M., and Martin-Martinez, J.M., Int. J. Adhes. Adhes., 21, 325, 2001.)... 

A typical elution profile the separation of saturated esters by gas-liquid chromatography 1. methyl formate 2. methyl acetate 3. ethyl formate 4. ethyl acetate 5. -propyl formate 6. iso-propyl acetate 7. w-butyl formate 8. sec-butyl acetate 9. iso-butyl acetate 10. n-butyl acetate... 

Synonyms Acetic acid, isobutyl ester Acetic acid, 2-methylpropyl ester AI3-15305 BRN 1741909 EINECS 203-745-1 FEMA No. 2175 IsoBuAc Isobutyl ethanoate 2-Methylpropyl acetate 2-Methyl-l-propyl acetate P-Methylpropyl ethanoate NSC 8035 UN 1213. 

Synonyms Acetic acid, isopropyl ester Acetic acid, 1-methylethyl ester 2-Acetoxypropane BRN 1740761 CCRIS 6053 EINECS 203-561-1 FEMA No. 2926 IsoPrAc Isopropyl ethano-ate NSC 9295 7-PrAc 2-Propyl acetate UN 1220. 

Synonyms Acetic acid, propyl ester Acetic acid, /3-propyl ester 1-Acetoxypropane AI3-21456 BRN 1740764 EINECS 203-686-1 FEMA No. 2925 NSC 72025 PrAc //-PrAc Propyl acetate 1-Propyl acetate /3-Propyl acetate Propyl ester of acetic acid /3-Propyl ethanoate UN 1276. 

Acetic acid, n-propyl ester, see Propyl acetate... 

Propylbenzene, see Propylbenzene Propyl carbinol, see 1-Butanol Propylene aldehyde, see Acrolein, Crotonaldehyde Propylene chloride, see 1,2-Dichloropropane Propylene dichloride, see 1,2-Dichloropropane a,p-Propylene dichloride, see 1.2-Dichloropropane 1,2-Propylene oxide, see Propylene oxide Propyl ester of acetic acid, see Propyl acetate Propylethylene, see 1-Pentene 5-Propylhexane, see 4-Methyloctane Propyl hydride, see Propane Propylic alcohol, see 1-Propanol Propyl iodide, see 1-Iodopropane n-Propyl iodide, see 1-Iodopropane Propylmethanol, see 1-Butanol Propyl methyl ketone, see 2-Pentanone n-Propyl nitrate, see Propyl nitrate... 

Here are some additional examples of esters as aromas or flavors propyl acetate is the aroma of pears pentyl acetate is the aroma of bananas octyl acetate is that for oranges. 

Synonyms 2-Propyl acetate acetic acid, isopropyl ester... 

ISOPROPYL ACETATE Acetic Acid, isopropyl ester, 2-Propyl acetate Flammable Liquid, II 1 3 0... 

Cellulose acetate, which is used in textiles and photographic film, is produced by reacting cellulose with acetic acid and acetic anhydride in the presence of sulfuric acid. Other esters of acetic acid, such as ethyl acetate and propyl acetate, are used in a variety of applications. 

Esters of primary aliphatic alcohols show an initial increase in rate with increasing acid concentration, but the curve, illustrated in Fig. 1 for ethyl acetate, passes through a maximum at an intermediate acid concentration (50-60% H2S04), and the rate coefficient subsequently falls almost to zero in the region of 80% acid. Finally, the rate increases slightly between 80% and 100% H2S04. Methyl acetate is rather more reactive than the ethyl ester in above about 50% H2S04, but /i-propyl acetate shows closely similar reactivity, so that the curve for ethyl acetate can be considered to represent the typical behaviour of a primary alkyl ester. 

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