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Chlorodifluoromethane

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Identification
Molecular formula
CHClF2
CAS number
75-45-6
IUPAC name
dichloro(fluoro)methane
State
State

At room temperature, chlorodifluoromethane is a gas. It is non-toxic and relatively non-flammable, making it suitable for applications in cooling systems.

Melting point (Celsius)
-157.70
Melting point (Kelvin)
115.45
Boiling point (Celsius)
-40.80
Boiling point (Kelvin)
232.35
General information
Molecular weight
86.47g/mol
Molar mass
86.4680g/mol
Density
1.4900g/cm3
Appearence

Chlorodifluoromethane is a colourless gas under standard conditions. When it is in liquid form, it is clear and colourless. The compound is often used in refrigeration and air conditioning systems.

Comment on solubility

Solubility of Dichloro(fluoro)methane

Dichloro(fluoro)methane, also known by its common name chlorofluorocarbon-12 or CFC-12, presents unique characteristics when it comes to solubility. This compound has a moderate solubility profile in various media.

Factors Affecting Solubility

The solubility of dichloro(fluoro)methane depends on several factors:

  • Temperature: Like many gases, its solubility varies with temperature changes; generally, lowering the temperature increases solubility.
  • Pressure: Higher pressures can increase the solubility of dichloro(fluoro)methane in a solvent.
  • Nature of the Solvent: This compound is more soluble in organic solvents than in water due to its non-polar characteristics.

Solubility in Various Solvents

To illustrate:

  • Water: Dichloro(fluoro)methane has low solubility in water, making it poorly water-compatible.
  • Organic Solvents: It is considerably more soluble in many organic solvents such as ethanol and benzene.

In conclusion, while dichloro(fluoro)methane exhibits limited solubility in aqueous environments, its tendency to dissolve in organic solvents opens up avenues for various applications. As stated in scientific literature, "the solubility behaviors can be significantly influenced by environmental conditions and solvent types." Thus, understanding these solubility properties is crucial for utilizing this compound effectively in applications where solubility plays a role.

Interesting facts

Interesting Facts about Dichloro(fluoro)methane

Dichloro(fluoro)methane, also known as R-12, is a fascinating compound that has played a significant role in both industrial applications and environmental discussions. Here are some intriguing aspects of this chemical compound:

  • Historical Significance: Dichloro(fluoro)methane was widely used as a refrigerant starting in the 1930s, marking a shift towards more efficient cooling systems for air conditioning and refrigeration.
  • Greenhouse Gas: Although effective for its intended uses, this compound is a potent greenhouse gas and contributes to ozone layer depletion. This has led to urgent calls for regulation and a shift to more environmentally friendly alternatives.
  • Chemical Structure: The compound is composed of carbon, chlorine, and fluorine atoms, showcasing how halogen substitutions can significantly alter the properties and applications of simple hydrocarbon molecules.
  • Regulatory Actions: Following the implementation of the Montreal Protocol, the usage of dichloro(fluoro)methane has drastically decreased, reflecting global commitment to reducing substances that harm the ozone layer.
  • Applications Beyond Refrigeration: In addition to its role as a refrigerant, this compound has been utilized in the production of aerosols, foam-blowing agents, and even in some analytical chemistry applications.

As a compound that lies at the intersection of utility and environmental impact, dichloro(fluoro)methane serves as a reminder of the delicate balance between technological advancement and ecological responsibility. Its history and applications spark crucial discussions in the field of chemistry, particularly concerning sustainable practices.

Synonyms
Dichlorofluoromethane
Dichloromonofluoromethane
dichloro(fluoro)methane
75-43-4
Fluorodichloromethane
Methane, dichlorofluoro-
Refrigerant 21
Monofluorodichloromethane
Algofrene type 5
HCFC-21
Arcton 7
Genetron 21
R 21 (refrigerant)
Freon F 21
Halon 112
Dwuchlorofluorometan
FREON 21
CHCl2F
HSDB 142
UNII-7GAO4CRJ0B
7GAO4CRJ0B
Fluorocarbon-21
EINECS 200-869-8
UN1029
BRN 1731041
CHFCl2
F 21
Dichloro-fluoro-methane
REFRIGERANT-21
FREON-21
HALON-112
DICHLORMONOFLUOROMETHANE
DTXSID7052498
DICHLOROFLUOROMETHANE [II]
4-01-00-00039 (Beilstein Handbook Reference)
DICHLOROFLUOROMETHANE [HSDB]
UN 1029
Fluorocarbon 21
Racon 21
DICHLOROFLUOROMETHANE (II)
Dwuchlorofluorometan [Polish]
HCFC 21
CFC-21
FC-21
Genetron21
Freon21
Halon112
Methane, dichlorofluoro
HALOCARBON 21
Dichlorofluoromethane, 98%
SCHEMBL9376
CFC21
Dichlorofluoromethane (ACGIH)
REFRIGERANT GAS R-21
F 21 (FLUOROCARBON)
AF 22 (FLUOROCARBON)
CFC 21
CHEMBL116813
DTXCID8031071
Dichloromonofluoromethane (OSHA)
DTXSID50168649
AF 22
AKOS015915816
R-21
DESFLURANE IMPURITY C [EP IMPURITY]
Dichlorofluoromethane or Refrigerant gas R21
NS00020118
Dichlorofluoromethane 100 microg/mL in Methanol
Q418163
Dichlorofluoromethane or Refrigerant gas R21 [UN1029] [Nonflammable gas]