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p-Dichlorobenzene

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Identification
Molecular formula
C7H6Cl2
CAS number
95-50-1
IUPAC name
1,2-dichloro-4-methyl-benzene
State
State

At room temperature, p-Dichlorobenzene is a solid. It sublimes easily, transitioning from a solid to a vapor state without passing through a liquid phase under normal atmospheric conditions.

Melting point (Celsius)
58.00
Melting point (Kelvin)
331.15
Boiling point (Celsius)
174.00
Boiling point (Kelvin)
447.15
General information
Molecular weight
147.00g/mol
Molar mass
147.0030g/mol
Density
1.2360g/cm3
Appearence

p-Dichlorobenzene appears as a colorless to pale yellow crystalline solid. It has a strong, musty odor that can be quite pungent. It forms needle-like crystals that may be used in various industrial and household applications, such as a deodorizer or an insect repellent.

Comment on solubility

Solubility of 1,2-Dichloro-4-methyl-benzene

1,2-Dichloro-4-methyl-benzene, commonly known as p-chloro-cresol, exhibits notable solubility characteristics influenced by its molecular structure. Here are some key points regarding its solubility:

  • Polarity: The presence of chlorine atoms enhances the polarity of the molecule, yet overall, 1,2-dichloro-4-methyl-benzene is considered to have a relatively low polarity, which affects its interaction with solvents.
  • Solvent Compatibility: This compound tends to be more soluble in organic solvents such as:
    • Hexane
    • Chloroform
    • Ethanol
  • However, it is insoluble in water. This is attributed to the molecule's hydrophobic characteristics, which inhibits its ability to interact with polar water molecules.

As a result, 1,2-dichloro-4-methyl-benzene serves as an important solvent in various chemical processes, but it poses challenges for aqueous solubility applications.

Interesting facts

Interesting Facts About 1,2-Dichloro-4-methyl-benzene

1,2-Dichloro-4-methyl-benzene, also known as o-chloro-toluene, is a fascinating compound that belongs to the class of aromatic hydrocarbons. Here are some noteworthy points about this compound:

  • Structural Significance: The presence of both chlorine atoms on the benzene ring, specifically at the 1 and 2 positions, offers unique reactivity patterns, making this compound an important intermediate in various chemical syntheses.
  • Applications: o-Chloro-toluene is widely used as a solvent and chemical intermediate. It is particularly valuable in the production of:
    • Aromatic compounds
    • Pharmaceuticals
    • Pesticides
  • Environmental and Safety Considerations: As with many chlorinated compounds, 1,2-dichloro-4-methyl-benzene can pose environmental risks. Its potential as a contaminant highlights the importance of safe handling and disposal methods.
  • Industrial Relevance: In addition to its applications in synthesis, this compound is often studied in the context of environmental science due to its persistence in the environment and possible implications for human health.
  • Unique Properties: The introduction of chlorine atoms modifies the electronic properties of the aromatic ring, enhancing its electrophilic substitution reactions. This characteristic makes it a versatile compound in organic chemistry.

In summary, 1,2-dichloro-4-methyl-benzene is not only a significant chemical compound in laboratory settings but also a vital contributor to various industrial processes. Its role in the synthesis of more complex chemicals and its implications for the environment make it a subject worthy of further study and consideration.

Synonyms
3,4-DICHLOROTOLUENE
95-75-0
1,2-Dichloro-4-methylbenzene
Benzene, 1,2-dichloro-4-methyl-
Toluene, 3,4-dichloro-
NSC 8765
EINECS 202-447-9
AI3-02581
DTXSID2021814
EC 202-447-9
NSC8765
3,4-dichloro-toluene
3,4-Dichlorotoluene, 97%
CHEMBL47525
SCHEMBL156450
Benzene,2-dichloro-4-methyl-
DTXCID601814
Toluene, 3,4-dichloro-(8CI)
1,2-Dichloro-4-methylbenzene #
NSC-8765
MFCD00000556
AKOS009031174
3,4-Dichlorotoluene, analytical standard
BS-42252
DB-024298
D0426
NS00005612
EN300-21591
3,4-Dichlorotoluene 100 microg/mL in Methanol
2-hydroxy-5-(p-tolylsulfonyloxy)benzenesulfonic acid; piperazine
InChI=1/C7H6Cl2/c1-5-2-3-6(8)7(9)4-5/h2-4H,1H
202-447-9