596-49-6

Basic information

• Product Name: Ethyl violet carbinol
• CAS NO: 596-49-6
• Molecular Formula: C₃₁H₄₃N₃O
• Molecular Weight: 473.702
• Mol File: 596-49-6.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: Ethyl violet carbinol(CAS DataBase Reference)
• NIST Chemistry Reference: Ethyl violet carbinol(596-49-6)
• EPA Substance Registry System: Ethyl violet carbinol(596-49-6)

Safety Data

• Hazardous Substances Data: 596-49-6(Hazardous Substances Data)

Usage

General Description

Ethyl violet carbinol, also known as crystal violet, is a synthetic compound that is commonly used as a histological stain and as a dye in the textile industry. It is a triarylmethane dye with a deep purple color and is often employed to stain bacteria and other microorganisms in laboratory settings. Ethyl violet carbinol has a complex chemical structure, containing three aromatic rings and an ethyl group, and is soluble in water, alcohol, and other organic solvents. It has antimicrobial properties and is used in some antiseptic and disinfectant preparations. However, it is also considered carcinogenic and is prohibited for use in some applications.

Upstream product

• 90-93-7 4,4'-bis(diethylamino)benzophenone 
• 91-66-7 N,N-diethylaniline 
• 25275-06-3 bis[4-(diethylamino)phenyl][4-(diethylammonio)phenyl]methylium 
• 105-58-8 Diethyl carbonate 
• 548-62-9 crystal violet 
• 2390-59-2 ethyl violet 
• 4865-00-3 leuco ethyl crystal violet 

Downstream Products

• 2390-59-2 ethyl violet 
• 1042740-32-8 C₁₈H₂₉O₃S^(1-)*C₃₁H₄₂N₃⁽¹⁺⁾ 

Relevant articles and documents

Quantitative analysis of dye decolourization reactions in mixed micellar systems of sodium dodecyl sulfate with tween-20, tween-80, and triton X-100

The reaction of triphenylmethane dye (ethyl violet) with hydroxyl ion has been investigated in absence and presence of micelles. In micellar solutions, the solubilization of dye carbocation is observed. The reaction rate constant follows pseudo-first order kinetics with respect to the nucleophile. In presence of sodium dodecyl sulfate (SDS) micelles, an inhibitory effect is observed due to repulsion of the nucleophile to the strongly bound dye carbocation in the negatively charged SDS aggregate. The presence of nonionic surfactant reduces the inhibitory effect of the anionic SDS micelles. Quantitative analysis of the micellar data obtained has been done by applying a positive cooperativity model of enzyme catalysis. The value of n (index of cooperativity) has been found to be greater than 1 for all systems under study. The presence of solvents such as ethanol, n-propanol, and n-butanol reduces the inhibitory effect of the micelles.

A study on equilibrium and kinetics of carbocation-to-carbinol conversion for di- and tri- arylmethane dye cations in aqueous solutions: Relative stabilities of dye carbocations and mechanism of dye carbinol formation

Arylmethane dye cations form a structurally interesting set of stable carbocations. A detailed study on rate-equilibria of carbinol formation from two diarylmethane and nine triarylmethane dye carbocations in aqueous solutions has been carried out using spectrophotometric measurements. The conclusions reached are : (i) The stability order found (auramine O>crystal violet = methyl violet > victoria blue R > victoria pure blue BO = ethyl violet > pararosaniline > brilliant green > malachite green > carbocation form of Michler's hydrol > methyl green), seems to be determined by an interplay of dye carbocation / carbinol conformation and stereoelectronic effects of substituents; and (ii) carbinol formation is general base catalysed and occurs by the rate determining attack of a H2O molecule on the dye carbocation centre via two kinetic pathways one mediated by another H2O molecule and the other by a OH ion.

The effects of cyclic terminal groups on the electronic absorption spectra of di- and tri-phenylmethane dyes

The spectral shifts of the first absorption bands brought about by cyclic terminal groups in analogues of Michler's Hydrol Blue, Malachite Green, and Crystal Violet are determined mainly by inductive effects.Dye cations containing terminal pyrrolidino substituents are significantly more stable than those possessing piperidino groups as a result of differences in basicity brought about by a change in size of the saturated heterocyclic ring.