Sintesis de furfural pdf

Furfural has two major functional groups, an aldehyde cho and two olefin groups ch ch, and is a versatile compound for many applications. Furfural c4h3ocho, also called 2furaldehyde, best known member of the furan family and the source of the other technically important furans. Furfural is an aldehyde that is furan with the hydrogen at position 2 substituted by a formyl group. An exothermic resinification of almost explosive violence can occur upon contact with strong mineral acids or alkalis. The first scientific opinion sccnfp082204 on furfural was adopted by the sccnfp during.

Furfural is obtained by the hydrolysis of vegetable matter, such as corn stumps, rice offal, and other materials that contain pentosan. It can be produced from agricultural raw materials containing pentosans and lignocellulosic feedstock. Furfural can be made by heating xylan in the presence of 12% hydrochloric or sulfuric acid. It has a role as a maillard reaction product and a metabolite. Cdc niosh pocket guide to chemical hazards furfural. It forms condensation products with many types of compounds, including phenol, amines and urea. The various reactions such as acylation, acetylation, reductive amination to amines, reduction to alcohols, decarboxylation, oxidation to carboxylic acids, grignard reactions and aldol and knoevenagel condensation can occur in. May 03, 20 this feature is not available right now. Furfural article about furfural by the free dictionary. Holtzapple, in encyclopedia of food sciences and nutrition second edition, 2003.

A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Nombre furfural frmula molecular 5 4 2 peso molecular gmol 96. Furfural c 4 h 3 ocho, also called 2furaldehyde, best known member of the furan family and the source of the other technically important furans. Background furfural cas no 98011 and ec no 2026277 has a widespread use in cosmetic products as a perfumery ingredient. A meta description is an html tag in the html code of your website, which allows you to customize a section of text that describes the page itself. Take your hr comms to the next level with prezi video. Furfural definition is a liquid aldehyde c5h4o2 of penetrating odor that is usually made from plant materials and used especially in making furan or phenolic resins and as a solvent. Furfural is an organic compound with the formula c 4 h 3 ocho. Furfural market by raw material, application industry forecast. It has an aldehyde group attached to the 2position of furan. Lorsquil est utilise comme additif du tabac, le 2furfural peut representer jusqua 0,03 % du poids total du tabac contenu dans une cigarette.

It is a product of the dehydration of sugars, as occur in a variety of agricultural byproducts, including corncobs, oat, wheat bran, and sawdust. It is a colorless liquid, although commercial samples are often brown. Furfural may be used as a solvent in petroleum refining, in manufacturing furfuralphenol plastics durite, as a solvent for cellulose nitrate. Find msds or sds, a coa, data sheets and more information. Furan has various interesting properties, such as it thermosets easily, has physical strength and exhibits resistance to corrosion. Opinion of the scientific panel on food additives, flavourings, processing aids and materials in contact with food afc related to flavouring group evaluation fge. Furfural appears as colorless or reddishbrown mobile liquids with a penetrating odor. 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.

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