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Rhodamine B

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Identification
Molecular formula
C28H31ClN2O3
CAS number
81-88-9
IUPAC name
(5,6-dihydroxy-2-naphthyl)-dimethyl-ammonium;chloride
State
State

At room temperature, this compound is typically found in a solid state. It is generally marketed as a crystalline powder.

Melting point (Celsius)
165.00
Melting point (Kelvin)
438.00
Boiling point (Celsius)
300.00
Boiling point (Kelvin)
573.00
General information
Molecular weight
479.02g/mol
Molar mass
479.0230g/mol
Density
1.2167g/cm3
Appearence

The compound appears as a reddish violet powder. It is known for its bright and intense color, which is why it is often used as a dye in various applications.

Comment on solubility

Solubility of (5,6-dihydroxy-2-naphthyl)-dimethyl-ammonium;chloride

The solubility of (5,6-dihydroxy-2-naphthyl)-dimethyl-ammonium;chloride is influenced by several factors that are characteristic of its chemical structure. This compound is a quaternary ammonium salt, and like many salts, its solubility is generally enhanced in polar solvents.

Here are some key points regarding its solubility:

  • Polar Solvents: Compounds of this nature tend to be soluble in water due to their ionic nature, where the polar water molecules help to stabilize the ions in solution.
  • Non-Polar Solvents: Its solubility in non-polar solvents is typically low, as the hydrophobic naphthalene structure does not readily interact with non-polar molecules.
  • Temperature Effects: The solubility can also depend on temperature; usually, the solubility increases with an increase in temperature.
  • pH Dependence: Being a quaternary ammonium salt, the solubility may be less affected by pH compared to weak acids or bases, but the overall solubility can still vary depending on the solvent's pH.

Overall, the unique structural features of (5,6-dihydroxy-2-naphthyl)-dimethyl-ammonium;chloride suggest that it exhibits good solubility in polar environments while demonstrating limited solubility in non-polar solvents. An understanding of these solubility properties is vital for applications in fields such as pharmaceuticals and chemistry.

Interesting facts

Interesting Facts about (5,6-Dihydroxy-2-naphthyl)-dimethyl-ammonium;chloride

(5,6-Dihydroxy-2-naphthyl)-dimethyl-ammonium;chloride is a fascinating compound with a variety of applications and intriguing characteristics. Below are some notable points regarding this interesting chemical:

  • Biological Activity: This compound is often studied for its biological effects, particularly in the context of its potential as a chiral auxiliary in synthetic organic chemistry.
  • Pharmaceutical Relevance: The derivatives of naphthalene compounds have been researched for their ability to exhibit biological activities, including anticancer and antimicrobial properties.
  • Coloring Agent: Due to the presence of the naphthalene structure, the compound may have applications in the field of dyes and pigments, contributing vibrant colors in various formulations.
  • Ion Exchange Capabilities: The ammonium portion of this molecule allows it to act as a cationic surfactant, which is important in various applications like water treatment and detergents.
  • Research Applications: In the realm of organometallic chemistry, this compound can be used as a building block for synthesizing more complex compounds, expanding the possibilities for novel material designs.

Scientists continue to explore the vast potential of (5,6-dihydroxy-2-naphthyl)-dimethyl-ammonium;chloride, as its unique structural features make it a valuable compound worth further investigation. As author Richard Feynman aptly said, “What I cannot create, I do not understand,” emphasizing the importance of delving deeper into the synthesis and properties of such compounds in chemistry!

Synonyms
21489-79-2
2-Naphthylamine, 5,6-dihydroxy-N,N-dimethyl-, hydrochloride
DTXSID10944087
6-(Dimethylamino)naphthalene-1,2-diol--hydrogen chloride (1/1)
RefChem:1073738
2-Dimethylamino-5,6-naphthalenediol hydrochloride
6-Dimethylamino-1,2-naphthalenediol hydrochloride
5,6-Dihydroxy-N,N-dimethyl-2-naphthylamine hydrochloride
1,2-NAPHTHALENEDIOL, 6-DIMETHYLAMINO-, HYDROCHLORIDE
5,6-Dihydroxy-N,N-dimethyl-beta-naphthylamine hydrochloride
DTXCID001372440
beta-Naphthylamine, 5,6-dihydroxy-N,N-dimethyl-, hydrochloride