furfural


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furfural

(fûr`fərəl) or

furfuraldehyde

(fûr'fərăl`dəhīd) [Lat.,=bran], C4H3OCHO, viscous, colorless liquid that has a pleasant aromatic odor; upon exposure to air it turns dark brown or black. It boils at about 160°C;. It is commonly used as a solvent; it is soluble in ethanol and ether and somewhat soluble in water. Furfural is the aldehydealdehyde
[alcohol + New Lat. dehydrogenatus=dehydrogenated], any of a class of organic compounds that contain the carbonyl group, , and in which the carbonyl group is bonded to at least one hydrogen; the general formula for an aldehyde is RCHO, where R is hydrogen
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 of pyromucic acid; it has properties similar to those of benzaldehyde. A derivative of furan, it is prepared commercially by dehydration of pentose sugars obtained from cornstalks and corncobs, husks of oat and peanut, and other waste products. It is used in the manufacture of pesticides, phenolfurfural resins, and tetrahydrofuran. Tetrahydrofuran is used as a commercial solvent and is converted in starting materials for the preparation of nylonnylon,
synthetic thermoplastic material characterized by strength, elasticity, resistance to abrasion and chemicals, low moisture absorbency, and capacity to be permanently set by heat. After 10 years of research E. I.
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.

Furfural

 

a yellowish liquid with the odor of fresh rye bread. Furfural has the structural formula

It has a boiling point of 161.7°C and a density of 1.16 g/cm3 at 20°C. Moderately soluble in water, it is readily soluble in alcohol and ether. Its chemical properties are similar to those of benzaldehyde.

Furfural is obtained by the hydrolysis of vegetable matter, such as corn stumps, rice offal, and other materials that contain pentosan. Furfural serves as a raw material in the preparation of furan, tetrahydrofuran, and tetrahydrofuryl alcohol and in the manufacture of furan resins, fungicides, and such pharmaceuticals as Furacin. It is also used in the refining of lubricating oils in the petroleum industry.

furfural

[′fər·fə‚ral]
(organic chemistry)
C4H3OCHO When pure, a colorless liquid, soluble in organic solvents, slightly soluble in water; used as a lube oil-refining solvent, in cellulosic formulations, in making resins, as a weed killer, as a fungicide, and as a chemical intermediate. Also known as 2-furaldehyde; furfuraldehyde; furfurol; furol.
References in periodicals archive ?
stipitis have been published, current research focuses on ethanol production with three major inhibitors, acetic acid, furfural and 5-hydroxymethyl furfural (HMF) at a concentration range of (0.
Furfural is obtained through the cleavage of the bond between O-C5 and ring formation between the C2 and C5 positions on the main chain of xylan (Shen et al.
Saccharomyces cerevisiae T12 (PTCC (1) 5315) (21), a native strain that showed good ethanol production and furfural resistance (up to 2 g/l), was used in this study as parent strain.
11) Several resins have been prepared by using cardanyl acrylate and furfural in the presence of an acid catalyst and a selective organic compound, and their thermal properties have been studied.
Production of jet fuel intermediates from furfural and acetone by aldol condensation over MgO/NaY.
Parte dos agucares tambem pode ser convertida em hidrocarbonetos por uma sequencia de reagoes de reforma catalitica em meio aquoso, ou adaptada para produzir biohidrogenio que e necessario em muitas etapas de transformagao dos derivados de furfural [34].
The supernatant (1 mL) was transferred into a second set of labeled tubes, mixed with 1mL 1% (v/v) furfural solution, and ice-bathed for 5 min.
Volatile inhibiting compounds such as furfural, acetic acids, formic acids, and other lignin degradation products were reduced by evaporation in lignocellulosic hydrolysates [8, 54].
dorsi de ovinos, foram encontrados os compostos 2-hexilfurano, m-xileno, 2-acetilpirrol com exclusividade e os compostos 2-pentilfurano, 2,3-pentanodiona, furfural, 2- e 3-metilbutanal, furaneol, acetol em maior abundancia.
Para determinar los inhibidores como xilitol, acido succinico, acido lactico, furfural, hidroximetil furfural, acido acetico y glicerol, formados durante el proceso de pretratamiento, se tomaron muestras de las fracciones liquidas del material pretratado, se filtraron a traves de un filtro de 0.
Prior to World War II, furfural, furan and tetrahydrofuran were obtained from cellulosic materials (corn cobs).
This method is based on the reaction between fructose, amino acids and weak acid that will yield 5- hydroxymethyl furfural (HMF).