isobutyl acetate


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isobutyl acetate

[¦ī·sō′byüd·əl ′as·ə‚tāt]
(organic chemistry)
C4H9OOCCH3 Colorless liquid with fruitlike aroma; soluble in alcohols, ether, and hydrocarbons, insoluble in water; boils at 116°C; used as a solvent for lacquer and nitrocellulose.
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Compounds with the highest concentrations included ethyl octanoate (383.0[micro]g [L.sup.-1]), isobutyl acetate (335.0[micro]g [L.sup.-1]), ethyl 3(E)-hexenoate (176.0[micro]g [L.sup.-1]), ethyl decanoate (116.0[micro]g [L.sup.-1]), hexyl acetate (106.3[micro]g [L.sup.-1]), and 2-phenylethyl acetate (100.l[micro]g [L.sup.-1]).
* Ethyl acetate, isobutyl acetate, isoamyl acetate and 2 phenethyl acetate.
Model apple juice samples were prepared by the researchers who used three concentrations of sucrose and fructose, and two concentrations of glucose, with a fixed concentration of six characteristic apple aroma-flavor compounds, including isobutyl acetate, hexanal, butyl acetate, trans-2-hexenal, propyl butyrate and hexyl acetate.
Identification and quantification was based on external calibration with standard solutions of acetaldehyde, 2-pentanone, 2-butanone, ethylacetate (Fluka, Buchs SG, Switzerland); ethanol (Arcus, Oslo, Norway); 2-methyl-1-propanol, 2-methyl-1-butanol, 2-methyl-1-butanal, 3-methyl-1-butanol, 2-methyl-1-butanol, 2-methyl-1-propanol, 3-methyl-1-butanal, 3-methyl-1-butanol, 2-methyl-1-butanol, 2-methyl-1-propanal, diacetyl, 2-propanol, 1- butanol, 2-butanol, acetoin, iso-butylacetate, acetone, 2,3-pentanedione, ethylacetate, acetone, isobutyl acetate and ethyl butyrate (Merck KGaA, Darmstadt, Germany).
Products: Carbitol[TM] solvent (DE), Methyl Carbitol (DM), Methyl Carbitol fuel additive grade, Dowanol PnB, Dowanol DPnB, Dowanol TPnB, Poly PnB, Dowanol PnP, Dowanol DPnP, Poly PnP, n-propanol, Propanol PA PM 6719, n-butanol, isobutanol, isobutanol mixtures, 2-ethylhexanol, n-butyl acetate, isobutyl acetate, isopropyl acetate, n-propyl acetate, primary amyl aceteate, UCAR[TM] Filmer IBT, UCAR n-butyl propionate, UCAR n-pentyl propionate, UCAR n-propyl propionate, UCAR Ester EEP
In 1995, non-TRI solvents, including methyl amyl ketone (MAK), n-butyl acetate and isobutyl acetate, were substituted in place of the solvents in use at that time.
Stock isobutyl acetate (0.1 g) was weighed into 100 ml volumetric flask with cyclohexane.