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see furfuralfurfural
or furfuraldehyde
[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;.
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(also tetramethylene oxide or furanidine), a colorless liquid with an ether-like odor. Tetrahydrofuran is miscible with water and many organic solvents. It boils at 65.6°C and has a density of 0.889 g/cm3 at 20°C.

Tetrahydrofuran is obtained by the catalytic hydrogenation of furan. It is typically used as a solvent for polyvinyl chloride or to replace ethyl ether in the laboratory synthesis of organomagnesium compounds, particularly magnesium vinyl bromide. The products of the homopolymerization and copolymerization of tetrahydrofuran are used as starting materials in the manufacture of urethane rubbers.


(organic chemistry)
C4H8O A clear, colorless liquid with a boiling point of 66°C; soluble in water and organic solvents; used as a solvent for resins and in adhesives, printing inks, and polymerizations. Abbreviated THF.
References in periodicals archive ?
These models can reveal the internal processes of the furans and tetrahydrofurans combustion.
Sturgis, "Double Azeotropy in Binary Mixtures 1,1,1,2,3,4,4,5,5,5-Decafluoropentane + Tetrahydrofuran," J.
Stock solutions of carotenoids were prepared in tetrahydrofuran, and echinenone dissolved in ethanol was used as the IS (IS3 and IS4; measured at 450 and 475 nm, respectively).
After the tetrahydrofuran had been removed from the orange liquid by rotary evaporation, crystallisation of the residue afforded crude biphenyl which was purified by recrystallisation from methanol.
We previously reported that the depolymerization products of PBT were TPA and tetrahydrofuran (THF), and that 1,4-BD could not be detected, in disagreement with other studies [18].
GPC (gel permeation chromatography), a variety of SEC, uses organic solvents (such as tetrahydrofuran and chloroform) as eluent.
Unlike linear samples, these particles are soluble in normal organic solvents such as tetrahydrofuran and chloroform.
Bis(3-phenyl-3,4-dihydro-2H-1,3-benzoxazinyl)isopropane or Bisphenol-A as a standard benzoxazine monomer, paraformaldehyde (99%), Tetrahydrofuran (THF), aniline (99%) and 3-aminopropyltrimethoxysilane (98%) were obtained from Sigma Aldrich Co.
In addition, 1,4-BDO is used for manufacturing tetrahydrofuran (THF) which is further used for manufacturing spandex, a raw material for sports apparel.
2] with 2-pyrazine carboxylic acid, 5-methyl-2-pyrazine carboxylic acid and 2, 3-pyrazine dicarboxylic acid which involved the mixing of the reactants in anhydrous tetrahydrofuran at room temperature in the presence of triethylamine.
The waste consisted of two 55-gallon drums of liquid tetrahydrofuran (THF), which was managed and treated by chemical neutralization or stabilization.
Commercially available reagents and starting materials (SigmaAldrich Chemical and Fisher Scientific) include the following: Tetraethylorthosilicate (TEOS), tin (IV) chloride, silicon (IV) chloride, sorbitan monooleate, 2-ethylhexanoic acid, calcium 2-ethylhexanoate and 1 M tetrabutylammonium fluoride in tetrahydrofuran were used as purchased without further purification.