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Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; ... Acetic Anhydride: 139.0 [6] Ethylene Dichloride: 1.25 83.5 −35 [7 ...
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.
Thiophene brominates 10 7 times faster than does benzene. Acetylation occurs readily to give 2-acetylthiophene, precursor to thiophene-2-carboxylic acid and thiophene-2-acetic acid. [9] Chloromethylation and chloroethylation occur readily at the 2,5-positions. Reduction of the chloromethyl product gives 2-methylthiophene.
Acetic anhydride, or ethanoic anhydride, is the chemical compound with the formula (CH 3 CO) 2 O. Commonly abbreviated Ac 2 O , it is the simplest isolable anhydride of a carboxylic acid and is widely used as a reagent in organic synthesis .
If the two layers are heated together, the system of layers will boil at 53.3 °C, which is lower than either the boiling point of chloroform (61.2 °C) or the boiling point of water (100 °C). The vapor will consist of 97.0% chloroform and 3.0% water regardless of how much of each liquid layer is present provided both layers are indeed present.
Wurtz measured the boiling point of ethylene oxide as 13.5 °C (56.3 °F), slightly higher than the present value, and discovered the ability of ethylene oxide to react with acids and salts of metals. [16] Wurtz mistakenly assumed that ethylene oxide has the properties of an organic base.
In the laboratory, it can be easily synthesized from anthranilic acid and acetic anhydride. N-Acetylanthranilic acid exhibits triboluminescence when crushed. [5] The fractured crystals have large electrical potentials between areas of high and low charge.
Triple point: 289.8 K (16.7 °C), ? Pa Critical point: 593 K (320 °C), 57.8 bar Eutectic point with water –26.7 °C Std enthalpy change of fusionΔ fus H o +11.7 kJ/mol Std entropy change of fusionΔ fus S o: 40.5 J/(mol·K) Std enthalpy change of vaporizationΔ vap H o +23.7 kJ/mol Std entropy change of vaporizationΔ vap S o? J/(mol·K ...