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Its freezing point is −94 °C and its boiling point is 49 °C. Cyclopentane is in the class of cycloalkanes, being alkanes that have one or more carbon rings. It is formed by cracking cyclohexane in the presence of alumina at a high temperature and pressure. It was first prepared in 1893 by the German chemist Johannes Wislicenus. [5]
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; ... Cyclopentane: 49.3 [20] Isopropanol: 82.3 [21] Dichloromethane: 1.33 ...
Cycloalkanes have higher boiling points, melting points, and densities than alkanes. This is due to stronger London forces because the ring shape allows for a larger area of contact. Even-numbered cycloalkanes tend to have higher melting points than odd-numbered cycloalkanes.
Pentane is an organic compound with the formula C 5 H 12 —that is, an alkane with five carbon atoms. The term may refer to any of three structural isomers, or to a mixture of them: in the IUPAC nomenclature, however, pentane means exclusively the n-pentane isomer, in which case pentanes refers to a mixture of them; the other two are called isopentane (methylbutane) and neopentane ...
Melting point: −19 °C (−2 °F; 254 K) Boiling point: 139 to 140 °C (282 to 284 °F; 412 to 413 K) ... Cyclopentane Cyclopentene Cyclopentanone:
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
Long needles, melting point 283 °C (darkens ar 220 °C). [ 2 ] [ 5 ] Obtained from cyclopentane-1α,2α-epoxi-3α,4α,5α-triol by treatment with hydrogen bromide to obtain cyclopentane-1β-bromo-2α,3α,4α,5α-tetrol, followed by benzoylation and treatment with DMSO and sodium bicarbonate .
Flash point: 42 °C (108 °F; 315 K) ... Bromocyclopentane is a derivative of cyclopentane, an alkyl halide with the chemical formula C 5 H 9 Br.