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 ?
China emerged as the leading regional market for furfural and accounted for 72.
These regulated genes work together, enhancing production of enzymes needed for reducing furfural and HMF into less toxic compounds.
Its degradation products (such as furfural and lignin fragments) and solubilized biomass compounds (such as acetic acid) must be removed before fermentation by processes such as overliming or ion exchange.
The disintegrate the woodchips and creates the volatile organics, furfural, methanol, and acetic acid.
Relatively high temperatures are required to break down the crystalline cellulose to glucose by using dilute-acid hydrolysis, which causes decomposition of sugars at a significant rate and the degradation products, such as acidic acid, hydroxymethylfurfural, and furfural, significantly inhibit ethanol fermentation.
In addition to lignin, the ethanol used to obtain it is recovered and recycled; furfural, acetic acid, valuable extractives (resin acids, terpenes, fatty acids, phytosterols) are isolated; and the cellulose and hexose sugars derived from hemicellulose are subjected to enzymatic conversion/fermentation to fuel ethanol.
Acetic acid, furfural and various hexose and pentose sugars arise from reactions involving hemicellulose.
A one stage process was used to produce furfural from cotton stalks by hydrolysis in hydrochloric acid.
Acid hydrolysis of lignocellulosic biomass results in the release of various sugars as well as inhibitory compounds such as furfural, 5-hydroxymethylfurfural (HMF), vanillin, and vanillic acid that could inhibit microbial growth and ethanol fermentation.
We also found traces of cancer-inducing chemicals benzene, toluene, xylene, methacrolein, furfural and Pyridine, which is used in the manufacture of pesticides.
Toxicology and Carcinogenesis Studies of Furfural (CAS No.