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Isobutane is the principal feedstock in alkylation units of refineries. Using isobutane, gasoline-grade "blendstocks" are generated with high branching for good combustion characteristics. Typical products created with isobutane are 2,4-dimethylpentane and especially 2,2,4-trimethylpentane. [7] Typical acid-catalyzed route to 2,4-dimethylpentane.
In the 20th century, the Braun company of Germany made a cordless hair styling device product that used butane as its heat source to produce steam. [29] As fuel, butane is often mixed with small amounts of mercaptans to give the unburned gas an offensive smell easily detected by the human nose. In this way, butane leaks can easily be identified.
Triple point: 113.55K (–159.8 °C), 0.019483 Pa Critical point: 408.7 K (134.4 °C), 3655 kPa Std enthalpy change of fusion, Δ fus H o: 4.59 kJ/mol Std entropy change of fusion, Δ fus S o: 39.92 J/(mol·K) Std enthalpy change of vaporization, Δ vap H o: 21.3 kJ/mol Std entropy change of vaporization, Δ vap S o: 81.46 J/(mol·K) Solid ...
The boiling and melting points of n-butane and isobutane are available in the 67th edition of the CRC as follows (celsius scale). No. 3672 n-butane b.p.: -0.5, m.p.: -138. No. 3808 isobutane b.p.: -11.7, m.p.: -159.4 This issue came up (for me) as I have my students look up these values as part of a laboratory exercise.
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: 184.3 3.69 –5.96 –5.87 K b & K f [1] Lauric acid:
Similar to the hair growth claims, there aren’t enough clinical studies to suggest that batana oil reverses gray hair. As Batis points out, “There are anecdotal accounts of miraculous ...
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
Water boiling at 99.3 °C (210.8 °F) at 215 m (705 ft) elevation. The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid [1] [2] and the liquid changes into a vapor.