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The minimum-pressure azeotrope has an ethanol fraction of 100% [85] and a boiling point of 306 K (33 °C), [84] corresponding to a pressure of roughly 70 torr (9.333 kPa). [86] Below this pressure, there is no azeotrope, and it is possible to distill absolute ethanol from an ethanol-water mixture.
Triple point: 150 K (−123 °C), 0.00043 Pa Critical point: 514 K (241 °C), 63 bar Std enthalpy change of fusion, Δ fus H o +4.9 kJ/mol Std entropy change of fusion, Δ fus S o +31 J/(mol·K) Std enthalpy change of vaporization, Δ vap H o +42.3 ± 0.4 kJ/mol [4] Std entropy change of vaporization, Δ vap S o: 109.67 J/(mol·K) Molal ...
High vapor pressures indicate a high volatility, while high boiling points indicate low volatility. Vapor pressures and boiling points are often presented in tables and charts that can be used to compare chemicals of interest. Volatility data is typically found through experimentation over a range of temperatures and pressures.
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; ... Ethanol: 0.78 78.4 1.22 –114.6 –1.99 K b [2] Ethylene bromide: 2. ...
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.
Owing to the presence of the polar OH alcohols are more water-soluble than simple hydrocarbons. Methanol, ethanol, and propanol are miscible in water. 1-Butanol, with a four-carbon chain, is moderately soluble. Because of hydrogen bonding, alcohols tend to have higher boiling points than comparable hydrocarbons and ethers.
Isopropyl alcohol (IUPAC name propan-2-ol and also called isopropanol or 2-propanol) is a colorless, flammable, organic compound with a pungent alcoholic odor. [9]Isopropyl alcohol, an organic polar molecule, is miscible in water, ethanol, and chloroform, demonstrating its ability to dissolve a wide range of substances including ethyl cellulose, polyvinyl butyral, oils, alkaloids, and natural ...
With a boiling point near 85 °C ... A common ethanol-gasoline mix of 10 percent ethanol mixed with gasoline is called ... The higher the gasoline volatility (the ...