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Acetaldehyde is an important precursor to pyridine derivatives, pentaerythritol, and crotonaldehyde. Urea and acetaldehyde combine to give a useful resin. Acetic anhydride reacts with acetaldehyde to give ethylidene diacetate, a precursor to vinyl acetate, which is used to produce polyvinyl acetate. [24] The global market for acetaldehyde is ...
Liquid properties Std enthalpy change of formation, Δ f H o liquid –196.4 kJ/mol Standard molar entropy, S o liquid: 117.3 J/(mol K) Enthalpy of combustion, Δ c H o –1167 kJ/mol Heat capacity, c p: 96.21 J/(mol K) at 0 °C 89.05 J/(mol K) at 25 °C Gas properties Std enthalpy change of formation, Δ f H o gas –170.7 kJ/mol Standard ...
Aldehyde structure. In organic chemistry, an aldehyde (/ ˈ æ l d ɪ h aɪ d /) is an organic compound containing a functional group with the structure R−CH=O. [1] The functional group itself (without the "R" side chain) can be referred to as an aldehyde but can also be classified as a formyl group.
This reaction once was the dominant technology for acetaldehyde production, but it has been displaced by the Wacker process, which affords acetaldehyde by oxidation of ethylene, a cheaper feedstock. A similar situation applies to the conversion of acetylene to the valuable vinyl chloride by hydrochlorination vs the oxychlorination of ethylene.
Alcohol dehydrogenase activity varies between men and women, between young and old, and among populations from different areas of the world. For example, young women are unable to process alcohol at the same rate as young men because they do not express the alcohol dehydrogenase as highly, although the inverse is true among the middle-aged. [37]
[1] [2] The reaction has been variously termed a disulfiram-like reaction, alcohol intolerance, and acetaldehyde syndrome. [ 3 ] The prototypical drug of this group is disulfiram (brand name Antabuse), which acts as an acetaldehyde dehydrogenase inhibitor , preventing the metabolism of acetaldehyde into acetic acid , and is used in the ...
The refrain of parents is “I love all my children equally.” But not all kids get treated equally. Experts explain the impact of preferential treatment in a family.
A classic example for favoring the keto form can be seen in the equilibrium between vinyl alcohol and acetaldehyde (K = [enol]/[keto] ≈ 3 × 10 −7). In 1,3-diketones, such as acetylacetone (2,4-pentanedione), the enol form is more favored. The acid-catalyzed conversion of an enol to the keto form proceeds by proton transfer from O to carbon.