Skip to main content

But-2-yne

ADVERTISEMENT
Identification
Molecular formula
C4H6
CAS number
503-17-3
IUPAC name
but-2-yne
State
State

But-2-yne is a liquid at room temperature. It is volatile and flammable, requiring proper storage and handling to ensure safety.

Melting point (Celsius)
-32.60
Melting point (Kelvin)
240.50
Boiling point (Celsius)
27.90
Boiling point (Kelvin)
301.10
General information
Molecular weight
54.09g/mol
Molar mass
54.0900g/mol
Density
0.7156g/cm3
Appearence

But-2-yne is a colorless liquid with a characteristic odor. It is often used as an industrial chemical and can be hazardous under certain conditions.

Comment on solubility

Solubility of But-2-yne

But-2-yne, with the chemical formula C4H6, is an alkyne that exhibits some unique solubility characteristics. Its linear structure allows for certain interactions but also leads to limited solubility in various solvents.

Key Points on Solubility:

  • Solubility in Water: But-2-yne is insoluble in water due to its non-polar nature, which prevents effective hydrogen bonding with water molecules.
  • Solubility in Organic Solvents: However, it is soluble in organic solvents such as hexane, ether, and acetone, where similar non-polar or weakly polar characteristics facilitate interactions.
  • Temperature Effects: The solubility of but-2-yne can increase with temperature, a common trend for many organic compounds, as higher temperatures generally provide more kinetic energy for solute-solvent interactions.

In summary, the solubility of but-2-yne is characterized by:

  • Insolubility in water
  • Solubility in non-polar organic solvents
  • Temperature-dependent solubility in these solvents

Understanding these solubility traits is crucial for applications in organic synthesis and other chemical processes.

Interesting facts

Interesting Facts About But-2-yne

But-2-yne, also known as 2-butyne, is a fascinating alkyne with a variety of chemical properties and applications. Here are some intriguing aspects of this compound:

  • Structure: But-2-yne features a unique linear structure with a triple bond between the second and third carbon atoms. This arrangement gives it distinct reactivity compared to other hydrocarbons.
  • Reactivity: As an alkyne, but-2-yne is highly reactive. It can participate in a range of chemical reactions, including hydrogenation, halogenation, and hydroboration. This makes it a versatile compound in organic synthesis.
  • Uses in Industry: But-2-yne is often employed in the synthesis of various pharmaceutical compounds and advanced materials. Its ability to act as a building block allows it to be transformed into numerous functionalized molecules.
  • Acetylene Relation: But-2-yne is structurally related to acetylene (ethyne), the simplest alkyne. However, the increased carbon chain length results in different chemical behaviors, expanding its utility in organic chemistry.
  • Isomerism: But-2-yne exhibits structural isomerism, characterized by its two possible forms: the cis and trans isomers. Each can have different physical and chemical properties, which is essential in synthetic chemistry.

As with all alkynes, but-2-yne serves as an excellent example of the diversity and complexity within organic chemistry. Its unique features make it a subject of interest for chemists and students alike, highlighting the intricate relationships between structure and reactivity in chemical compounds.

Synonyms
2-BUTYNE
But-2-yne
503-17-3
Crotonylene
Dimethylacetylene
UN1144
dimethyl acetylene
UNII-LKE6D3018E
LKE6D3018E
2-BUTINE
EINECS 207-962-2
CH3C.$.CCH3
DTXSID3060116
UN 1144
UN-1144
4-butyne
but-4-yne
DTXCID2040812
inchi=1/c4h6/c1-3-4-2/h1-2h
xnmqeekycvkgbd-uhfffaoysa-n
2-butyn
MFCD00009275
2-Butyne, 99%
CHEMBL119108
DTXSID80231653
AKOS015841146
B0951
Crotonylene [UN1144] [Flammable liquid]
NS00020653
D88719
Q209336
25684-85-9