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Diiodomethane

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Identification
Molecular formula
CH2I2
CAS number
75-11-6
IUPAC name
diiodomethane
State
State
Diiodomethane is typically a liquid under normal conditions. It is known for its high density, which is higher than many organic solvents.
Melting point (Celsius)
5.72
Melting point (Kelvin)
278.87
Boiling point (Celsius)
181.10
Boiling point (Kelvin)
454.30
General information
Molecular weight
267.84g/mol
Molar mass
267.8350g/mol
Density
3.3250g/cm3
Appearence

Diiodomethane is a dense colorless liquid at room temperature, although it can take on a brownish color when it decomposes due to exposure to light, forming iodine.

Comment on solubility

Solubility of Diiodomethane (CH2I2)

Diiodomethane, known for its unique properties, also exhibits interesting solubility characteristics. In general, its solubility can be summarized as follows:

  • Solvent Polarity: Diiodomethane is a non-polar compound. Thus, it tends to dissolve well in non-polar solvents.
  • Water Solubility: Diiodomethane has a very low solubility in water, making it effectively insoluble due to the polar nature of water.
  • Organic Solvents: It is highly soluble in organic solvents, such as ethanol or acetone, due to similar intermolecular forces.

Furthermore, the solubility of organic compounds like diiodomethane is significantly influenced by temperature; as temperature increases, the solubility in organic solvents tends to improve.

With respect to practical applications, this low solubility in water may be advantageous or restrictive, depending on the context of use. The overall understanding of solubility in diiodomethane reveals:

  • Its compatibility in various industrial applications
  • The significance of solvent choice to achieve desired results

In conclusion, the solubility profile of diiodomethane is essential to its use in organic chemistry and related fields, and the phrase "like dissolves like" is a handy rule to remember when considering its behavior in various environments.

Interesting facts

Interesting Facts about Diiodomethane

Diiodomethane, commonly referred to as methylene iodide, is a fascinating compound with various applications in both scientific research and practical uses. Here are some key points that highlight its significance:

  • Unique Properties: Diiodomethane has a high refractive index, making it useful in optical applications, such as in microscopy and the creation of optical devices.
  • Synthetic Versatility: This compound is often used as a solvent in organic synthesis due to its ability to dissolve a wide range of organic compounds.
  • Chemical Reactivity: Diiodomethane serves as a reagent in various chemical reactions, including those involving the methylation of heterocycles and other organic molecules.
  • Density Matter: Its relatively high density allows for effective separation techniques in laboratories, often in the study of materials and reaction mechanisms.
  • Environmental Considerations: While it has many useful properties, diiodomethane is also known to have health and environmental risks, necessitating careful handling and disposal protocols.

Applications in Research

In research, diiodomethane is often employed in:

  • Inert atmosphere reactions where it serves as a solvent in controlled environments.
  • Studying molecular interactions and solvation effects in various chemical systems.

Overall, diiodomethane is a *versatile and valuable compound* in the field of chemistry, being utilized in various ways while posing interesting challenges in terms of safety and handling. Its unique attributes allow chemists to explore new applications and delve deeper into chemical phenomena.

Synonyms
DIIODOMETHANE
75-11-6
Methylene iodide
Methane, diiodo-
Methylene diiodide
MI-Gee
Dijodmethan
Methylenjodid
diiodo-methane
CH2I2
di-iodomethane
NSC 35804
Methylene iodide-13C,d2
NSC-35804
3J731705OX
Dijodmethan [Czech]
Methylenjodid [Czech]
Methylene Diiodide; Methylene Iodide; NSC 35804
EINECS 200-841-5
methvleneiodide
methyleneiodide
methyleniodid
Methyl diiodide
CCRIS 8551
Mi-gee brand
UNII-3J731705OX
bis(iodanyl)methane
MFCD00001079
SCHEMBL185
WLN: I1I
METHYLENE IODIDE [MI]
DTXSID4058784
NSC35804
STR03006
BBL011419
STL146526
AKOS002664705
FD10777
BP-21047
Diiodomethane, SAJ first grade, >=98.0%
D0610
NS00022756
diiodomethane; di-iodomethane; methylene iodide
A838327
Q425692
F0001-1891
Diiodomethane, ReagentPlus(R), 99%, contains copper as stabilizer