Acid Fuchsin is an acidic magenta dye; it’s a sodium sulfonate derivative of fuchsin. This dye is broadly used in histology, particularly in staining methods like Masson’s trichrome stain.
CAS No.: 3244-88-0
Synonyms: Acid Violet 19; Fuchsin S; Fuchsin acid; Rubine S; Acid rubin; p-Fuchsine acid; C.I. 42685.
| Physical Properties | |
| Chemical formula | C20H17N3Na2O9S3 |
| IUPAC Name | disodium;(3Z)-3-[(4-amino-3-sulfonatophenyl)-(4-amino-3-sulfophenyl)methylidene]-6-imino-5-methylcyclohexa-1,4-diene-1-sulfonate |
| Molecular weight | 585.5 g/mol |
| Solubility | Water, Ethanol & polar solvents |
| Density | 1.74 at 20℃ |
| Chemical Properties | |
| Colour | Dark green |
| State | Crystalline powder or crystals |
| Melting point | >250°C |
| λmax | 546 nm |
| pH | 4.0-6.0 |
| Pictograms : |
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| Hazard Statements : | H315: Causes skin irritation |
| Precautionary statements : | P261: Avoid breathing dust/fume/gas/mist/vapors/spray. |
Acid Fuchsin is an acidic magenta dye; it’s a sodium sulfonate derivative of fuchsin. This dye is broadly used in histology, particularly in staining methods like Masson’s trichrome stain.
CAS No.: 3244-88-0
Synonyms: Acid Violet 19; Fuchsin S; Fuchsin acid; Rubine S; Acid rubin; p-Fuchsine acid; C.I. 42685.
| Physical Properties | |
| Chemical formula | C20H17N3Na2O9S3 |
| IUPAC Name | disodium;(3Z)-3-[(4-amino-3-sulfonatophenyl)-(4-amino-3-sulfophenyl)methylidene]-6-imino-5-methylcyclohexa-1,4-diene-1-sulfonate |
| Molecular weight | 585.5 g/mol |
| Solubility | Water, Ethanol & polar solvents |
| Density | 1.74 at 20℃ |
| Chemical Properties | |
| Colour | Dark green |
| State | Crystalline powder or crystals |
| Melting point | >250°C |
| λmax | 546 nm |
| pH | 4.0-6.0 |
| Pictograms : |
|
| Hazard Statements : | H315: Causes skin irritation |
| Precautionary statements : | P261: Avoid breathing dust/fume/gas/mist/vapors/spray. |
Acid Fuchsin stain is used in histology to differentiate between muscle and collagen in tissue sections, as well as to identify bacteria in microbiological studies.
Acid fuchsin solution is a dye solution made by dissolving acid fuchsin, an acidic magenta dye, in water or alcohol. It is commonly used in histology and microbiology. The solution is generally used in specific staining protocols, such as Masson’s trichrome stain.
Acid fuchsin can act as a pH indicator, changing color based on the acidity of the solution. It typically transitions from red in acidic conditions to pink in more neutral environments. This property is used in various staining techniques and biochemical assays.
 