Sturgis, "Double Azeotropy in Binary Mixtures 1,1,1,2,3,4,4,5,5,5-Decafluoropentane + Tetrahydrofuran
Moreover, the authors of several reports have suggested that measurement of retinol, carotenoids, and tocopherol vitamers could be enhanced by use of a gradient system incorporating a third or fourth organic modifier, such as tetrahydrofuran
, dichloromethane, or hexane, or by use of two separate chromatographic conditions (11-13).
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.
Figure 4A shows the FTIR spectrum of a poly(norbornene) prepared by adding Grubbs I to norbornene dissolved in tetrahydrofuran
(THF, dehydrated), EtOH (dehydrated), and deionized water.
The most common polar solvents for resins include acetonitrile (ACN)/water, methanol/water, and tetrahydrofuran
(THF) is also a suitable solvent for studies of strong bases  as well as weak acids .
Contact angle measurements on the surface of polymer films cast from a tetrahydrofuran
solution of the polymer demonstrated that the modified polymer gave rise to a significantly hydrophilic surface compared to unmodified PVC.
According to the literature data, great deviations in the case of H-bonding solvents (such as pyridine, tetrahydrofuran
, and dimethyl sulfoxide) were due to their special interaction with organic structure rather than to mineral effect [3, 10].
BASF received approval from the Chinese State Council to build an integrated production facility for polytetrahydrofuran (PolyTHF) and tetrahydrofuran
(THF) in the Shanghai Chemical Industry Park at Caojing, Shanghai, China.
The presence of a number of different acetogenins with a characteristic butenolide substituent and tetrahydrofuran
or bistetrahydrofuran elements, and which contain hydroxyl group in an a-position has also been established (Nonfon et al.
The new chemical additions include heptane, ethane, 1,3-butadiene, trimethylbenzene, naphthalene, terpenes, acrylamide, pesticides, tetrahydrofuran
, methyl tertiary butyl ether, and n-nitrosodiethylamine.