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Methylene Blue

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Identification
Molecular formula
C16H18N3ClS
CAS number
122965-43-9
IUPAC name
[5-(dimethylamino)-1,2,4-dithiazol-3-ylidene]-dimethyl-ammonium;hydrogen sulfate
State
State

At standard room temperature, solid.

Melting point (Celsius)
100.00
Melting point (Kelvin)
373.00
Boiling point (Celsius)
250.00
Boiling point (Kelvin)
523.00
General information
Molecular weight
319.85g/mol
Molar mass
319.8530g/mol
Density
1.1000g/cm3
Appearence

Methylene Blue appears as a dark green crystalline solid or powder. It often has a bronze-like luster. When dissolved in water, it gives a blue solution. In analytical and dyeing processes, its solutions can present vibrant blue colored solutions, which can also be used in (a particular shade of) blue dyes.

Comment on solubility

Solubility of [5-(dimethylamino)-1,2,4-dithiazol-3-ylidene]-dimethyl-ammonium;hydrogen sulfate

The solubility of this compound, known as [5-(dimethylamino)-1,2,4-dithiazol-3-ylidene]-dimethyl-ammonium;hydrogen sulfate, can be quite intriguing due to the presence of both a quaternary ammonium group and a sulfate moiety.

In general, the solubility behavior can be highlighted through the following key points:

  • Polarity: The quaternary ammonium group tends to enhance solubility in polar solvents, particularly water, due to its ionic nature.
  • Hydrogen Bonding: The sulfate group can engage in hydrogen bonding, which further aids in solubility in polar solvents.
  • Temperature Dependence: Like many ionic compounds, solubility may increase with temperature, thus being relevant for experimental applications.
  • Effect of pH: The solubility can be influenced by the pH of the solution, as conditions that promote or hinder protonation of functional groups alter the compound's overall solubility.

When discussing solubility, it's essential to note that “like dissolves like”—compounds with similar polarity tend to exhibit higher solubility in one another. For this compound, one would predominantly expect good solubility in aqueous environments because of its ionic characteristics. However, the exact solubility value can vary and may necessitate experimental determination in various solvent systems.

Interesting facts

Interesting Facts about [5-(dimethylamino)-1,2,4-dithiazol-3-ylidene]-dimethyl-ammonium;hydrogen sulfate

This fascinating compound, commonly referred to in scientific contexts due to its complex structure, offers a window into the intriguing world of thiadiazole derivatives. Here are some noteworthy points about this compound:

  • Thiadiazole Backbone: The compound is built around a thiadiazole ring system, which is notable for its diverse biological activities and applications, particularly in pharmaceuticals and agrochemicals.
  • Dimethylamino Group: The presence of the dimethylamino group contributes to the compound's nucleophilic properties, making it significant in various chemical reactions.
  • Ammonium Salt: As a quaternary ammonium compound, it shows potential for applications in organic synthesis and as a phase transfer catalyst, which enhances the solubility of reactants in nonpolar solvents.
  • Hydrogen Sulfate Ion: The inclusion of hydrogen sulfate as a counterion highlights its potential use in acid-base chemistry, adding robustness to the compound's ionic interactions.

Scientists are continually exploring the applications of compounds like this one, particularly in the realms of materials science and medicinal chemistry. One of the most striking aspects is the versatility of thiadiazole derivatives in creating new compounds with varied functionalities, making them vital in research and industry.

This compound demonstrates the intricate dance of atoms and functions that chemists work with to develop novel materials. As researchers dive deeper into its properties and potential applications, it symbolizes the ongoing journey to uncover the hidden potentials within chemical compounds.

Synonyms
AI3-62112
1,2,4-DITHIAZOL-1-IUM, 3,5-BIS(DIMETHYLAMINO)-, HYDROGEN SULFATE
15005-65-9
3,5-Bis(dimethylamino)-1,2,4-dithiazolium hydrogen sulfate
DTXSID00164459
DTXCID7086950