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Crotonaldehyde

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Identification
Molecular formula
C4H6O
CAS number
4170-30-3
IUPAC name
but-2-enal
State
State
Crotonaldehyde is typically found as a liquid at room temperature. It has a relatively low boiling point.
Melting point (Celsius)
-76.00
Melting point (Kelvin)
197.15
Boiling point (Celsius)
104.00
Boiling point (Kelvin)
377.15
General information
Molecular weight
70.09g/mol
Molar mass
70.0900g/mol
Density
0.8470g/cm3
Appearence

Crotonaldehyde is a clear liquid with a pungent, acrid odor. It is colorless to pale yellow in appearance.

Comment on solubility

Solubility of But-2-enal

But-2-enal, with the chemical formula C4H6O, exhibits interesting solubility characteristics that are important in both industrial and laboratory settings. This compound is known to be:

  • Soluble in organic solvents: But-2-enal readily dissolves in a variety of organic solvents such as ethanol, ether, and chloroform, which is typical for carbonyl-containing compounds.
  • Limited solubility in water: Although it can mix with water to some extent, its solubility is not particularly high due to its hydrophobic hydrocarbon chain. This can be summarized as: “Water solubility is moderate but not extensive.”

The solubility behavior of But-2-enal is largely influenced by the presence of the aldehyde group (-CHO), which interacts differently compared to other functional groups. It is *essential* to consider the practical implications of its solubility, especially in applications like:

  1. Flavoring agents in food chemistry
  2. Synthetic pathways in organic reactions
  3. As a precursor in the manufacture of polymers

In summary, understanding the solubility of C4H6O is crucial for its utilization across various applications, highlighting the fascinating interplay between its molecular structure and solubility properties.

Interesting facts

Interesting Facts about But-2-enal

But-2-enal, often referred to as crotonaldehyde, is a fascinating compound with a rich history and diverse applications in the field of organic chemistry. Here are some notable points about this unsaturated aldehyde:

Chemical Characteristics

  • Structure: It features a double bond in its carbon chain, which gives it unique reactivity compared to saturated aldehydes.
  • Reactivity: The presence of the aldehyde functional group makes but-2-enal a versatile compound in organic synthesis, often used in the production of various chemicals.
  • Isomerism: But-2-enal exhibits geometric isomerism, having both cis and trans forms due to the double bond, leading to different physical and chemical properties.

Applications in Industry

  • Flavors and Fragrances: But-2-enal is utilized in the food industry as a flavoring agent, contributing to various aromas.
  • Synthesis of Pharmaceuticals: Its reactive double bond is integral in creating complex molecules used in various drugs.
  • Polymer Manufacturing: This compound serves as a precursor in the manufacture of polymers, which are essential for numerous materials.

Cultural Significance

Beyond its scientific relevance, but-2-enal has sparked interest due to its role in:

  • Chemistry Education: It is often used as a model compound in organic chemistry labs to teach about aldehydes and their reactions.
  • Natural Occurrence: Crotonaldehyde is sometimes found in trace amounts in various essential oils, fascinating researchers interested in natural compounds.

In conclusion, but-2-enal's unique properties and versatility make it a compound that continues to intrigue scientists and students alike. Its role in both natural and synthetic processes highlights the intricate connections between chemistry and everyday life!

Synonyms
Butenal
but-2-enal
(Z)-2-Butenal
.beta.-Methylacrolein
Crotonaldehyde (Contains ~0.1% BHT stabilizer)(Mixture of cis/trans isomers)
2-buten-1-one
(2EZ)-crotonaldehyde
CHEMBL3561468
MFCD07780582
AKOS030228150
SY320784
DB-041741
Q60193372