These models can reveal the internal processes of the furans and tetrahydrofurans
Sturgis, "Double Azeotropy in Binary Mixtures 1,1,1,2,3,4,4,5,5,5-Decafluoropentane + Tetrahydrofuran
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 .
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
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.