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Butene

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Identification
Molecular formula
C4H8
CAS number
106-98-9
IUPAC name
but-1-ene
State
State

At room temperature, butene is a gas. It is usually handled in liquefied form in pressurized containers.

Melting point (Celsius)
-185.30
Melting point (Kelvin)
87.85
Boiling point (Celsius)
-6.30
Boiling point (Kelvin)
266.85
General information
Molecular weight
56.11g/mol
Molar mass
56.1080g/mol
Density
0.6200g/cm3
Appearence

Butene is a colorless gas with a faint gasoline-like odor. It doesn't have a distinct appearance since it is usually in gaseous form under standard conditions.

Comment on solubility

Solubility of But-1-ene

But-1-ene (C4H8), an alkene, exhibits some interesting properties regarding its solubility. Generally, the solubility of hydrocarbons, such as but-1-ene, can fluctuate based on factors like temperature and pressure. Here’s a breakdown of its solubility characteristics:

  • In Water: But-1-ene is considered poorly soluble in water due to its non-polar nature. The inability to form significant hydrogen bonds with water molecules limits its solubility.
  • In Organic Solvents: It demonstrates good solubility in non-polar organic solvents such as hexane, benzene, and ether. This is primarily due to the similar structural properties that allow for favorable interactions.
  • Influence of Temperature: As temperature increases, the solubility in organic solvents can also increase, enhancing the solubility of but-1-ene.

Thus, when considering but-1-ene in various solvents, it is important to note that while it has limited solubility in polar solvents like water, it readily dissolves in non-polar environments, making it versatile in organic chemistry applications. As noted, the rule of thumb with hydrocarbons is that "like dissolves like," which holds true for but-1-ene.

Interesting facts

Interesting Facts about But-1-ene

But-1-ene, a member of the alkene family, is a four-carbon unsaturated hydrocarbon that plays a significant role in organic chemistry and industrial applications. Its unique structure contributes to various intriguing properties and uses.

Chemical Structure and Properties

As a straight-chain alkene, but-1-ene features a double bond between the first and second carbon atoms. This makes it reactive, allowing it to undergo several important chemical reactions, including:

  • Addition Reactions: The double bond is reactive, leading to the addition of halogens, hydrogen halides, or even water.
  • Polymerization: But-1-ene can be polymerized to produce useful plastics such as polyethylene, which is widely used in packaging and containers.

Industrial Applications

But-1-ene is not just an interesting molecule in the laboratory; it has an array of applications in industry:

  • Plastics Manufacturing: The polymerization of but-1-ene yields low-density polyethylene (LDPE) and high-density polyethylene (HDPE), both crucial in producing films, bags, and bottles.
  • Synthesis of Chemicals: It serves as a starting material for producing various chemicals, including butyl rubber and other polymers.

Reactivity and Safety Considerations

While but-1-ene is versatile and beneficial, it must be handled with care:

  • It is a flammable gas and poses fire hazards.
  • Proper ventilation and protective equipment are essential when working with it in the laboratory or industrial settings.

Overall, but-1-ene exemplifies the importance of alkenes in chemistry, showcasing both their reactivity and their substantial contributions to modern materials and industry. As Chemistry students explore the world of hydrocarbons, compounds like but-1-ene highlight the intersection of theory and practical application in everyday life.

Synonyms
1-BUTENE
But-1-ene
106-98-9
Ethylethylene
BUTENE
1-Butylene
Butene-1
alpha-Butylene
alpha-Butene
1-C4H8
CCRIS 8970
HSDB 179
25167-67-3
.alpha.-Butene
.alpha.-Butylene
EINECS 203-449-2
UNII-LY001N554L
CHEBI:48362
LY001N554L
DTXSID1026746
But-1-ene (10% in Hexanes)
EC 203-449-2
1-Butene (ca. 10% in Hexane)
MFCD00009383
Butene, 1-
1-n-Butene
1-Butene; 1-Butylene; Butene-1; Ethylethylene; a-Butene; a-Butylene
Actipol E6
but-1-en-3-yl
1-BUTENE [HSDB]
1-BUTENE [MI]
1-Butene, >=99%
CHEMBL117210
DTXCID606746
1-Butene, >=99.6%
DTXSID80983963
1-Butene (ca. 10% in Toluene)
1-Butene, >=99.0% (GC)
AKOS009156841
DB-040719
B0689
B4410
B4411
NS00009034
InChI=1/C4H8/c1-3-4-2/h3H,1,4H2,2H
Q2468763
203-449-2
6993-22-2