Ethyl Violet is a synthetic triphenylmethane (triarylmethane) dye and pH indicator widely used in biological staining, analytical chemistry, and industrial applications. It appears as a dark greenish powder with a characteristic metallic lustre and produces an intense blue-violet solution when dissolved in water or ethanol.
It functions as a cationic dye and binds strongly with negatively charged substrates such as cellulose fibres, microbial cell walls, and various biological tissues.
CAS No.:2390-59-2
Synonyms: Basic Violet 4; Hexaethyl Pararosaniline Chloride; Hexaethyl Pararosaniline Chloride; Violet Ethyl B; Ethyl Violet Hemi(Zinc Chloride) Salt
| Physical Properties | |
| Chemical formula | C31H42N3Cl |
| IUPAC Name | N-(4-(Bis(4- diethylamino)phenyl)methylene-2,5-cyclodexadien-1- ylidene)-N-ethylethanaminium chloride |
| Molecular weight | 492.14 g/mol |
| Solubility | Soluble in water, ethanol, and methanol |
| Chemical Properties | |
| Color | Dark green – Dark brown |
| State | Solid |
| Melting point | >250°C |
| Odor | Odorless |
| λmax | 596nm |
| Pictograms : |
|
| Hazard Statements : | H318 Causes serious eye damage H302 Harmful if swallowed |
| Precautionary statements : | P280 Wear protective gloves/protective clothing/eye protection/face protection.  |
Ethyl Violet is a synthetic triphenylmethane (triarylmethane) dye and pH indicator widely used in biological staining, analytical chemistry, and industrial applications. It appears as a dark greenish powder with a characteristic metallic lustre and produces an intense blue-violet solution when dissolved in water or ethanol.
It functions as a cationic dye and binds strongly with negatively charged substrates such as cellulose fibres, microbial cell walls, and various biological tissues.
CAS No.:2390-59-2
Synonyms: Basic Violet 4; Hexaethyl Pararosaniline Chloride; Hexaethyl Pararosaniline Chloride; Violet Ethyl B; Ethyl Violet Hemi(Zinc Chloride) Salt
| Physical Properties | |
| Chemical formula | C31H42N3Cl |
| IUPAC Name | N-(4-(Bis(4- diethylamino)phenyl)methylene-2,5-cyclodexadien-1- ylidene)-N-ethylethanaminium chloride |
| Molecular weight | 492.14 g/mol |
| Solubility | Soluble in water, ethanol, and methanol |
| Chemical Properties | |
| Color | Dark green – Dark brown |
| State | Solid |
| Melting point | >250°C |
| Odor | Odorless |
| λmax | 596nm |
| Pictograms : |
|
| Hazard Statements : | H318 Causes serious eye damage H302 Harmful if swallowed |
| Precautionary statements : | P280 Wear protective gloves/protective clothing/eye protection/face protection.  |
Ethyl Violet is an acid–base indicator that shows a colour transition in a highly acidic range. It typically changes to purple around pH 0–1.6, with the transition centered roughly near pH ≈ 1.
Crystal Violet and Ethyl Violet are similar but not identical compounds. Both are triphenylmethane dyes with a violet colour and are used in staining and indicator applications. However, they differ in their chemical structure Crystal Violet contains methyl groups, whereas Ethyl Violet contains ethyl groups and therefore have different specific properties and uses.
Ethyl Violet soda lime is a mixture of soda lime (a carbon dioxide absorbent composed mainly of calcium hydroxide with small amounts of sodium or potassium hydroxide) impregnated with Ethyl Violet indicator. It is used in gas absorption systems where the Ethyl Violet changes colour (typically from light to purple) to indicate the exhaustion of the soda lime and loss of its COâ‚‚ absorbing capacity.
