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Tetrahydrofuran (THF), or oxolane, is an organic compound with the formula (CH 2) 4 O. The compound is classified as heterocyclic compound , specifically a cyclic ether . It is a colorless, water- miscible organic liquid with low viscosity .
Phase behavior Triple point: 164.76 K (−108.39 °C), ? Pa Critical point: 541 K (268 °C), 5190 kPa Std enthalpy change of fusion, Δ fus H o: 8.540 kJ/mol Std entropy change
This is a list of CAS numbers by chemical formulas and chemical compounds, indexed by formula.The CAS number is a unique number applied to a specific chemical by the Chemical Abstracts Service (CAS).This list complements alternative listings to be found at list of inorganic compounds and glossary of chemical formulae
Screenshot of the CAS Common Chemistry database with information about caffeine ().. A CAS Registry Number [1] (also referred to as CAS RN [2] or informally CAS Number) is a unique identification number, assigned by the Chemical Abstracts Service (CAS) in the US to every chemical substance described in the open scientific literature, in order to index the substance in the CAS Registry.
2-Methyltetrahydrofuran (2-MeTHF) is an organic compound with the molecular formula C 5 H 10 O. It is a highly flammable, mobile liquid. It is mainly used as a replacement for Tetrahydrofuran (THF) in specialized applications for its better performance, such as to obtain higher reaction temperatures, or easier separations (as, unlike THF, it is not miscible with water).
Tetrahydrofurfuryl alcohol (THFA) is an organic compound with the formula HOCH 2 C 4 H 7 O. In terms of its structure, it consists of a tetrahydrofuran ring substituted in the 2-position with a hydroxymethyl group.
For example, tetrahydrofuran-3-one (3-ketotetrahydrofuran) [12] and 3-aminotetrahydrofuran [13] have been synthesized from 3-hydroxytetrahydrofuran and used in pharmaceutical syntheses. Additionally, additive amounts (0.05-0.15 weight %) of the nitrate ester manufactured by sulfuric acid - nitric acid nitration of 3-hydoxytetrahydrofuran have ...
It is produced by polymerization of tetrahydrofuran as well as 1,4-butanediol. The product is commercially available as polymers of low average molecular weights , between 250 and 3000 daltons . In this form it is a white waxy solid that melts between 20 and 30 °C.