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Methyl Violet 2B is a cationic triphenylmethane dye. It is a greenish powder having high solubility in water and ethanol. It appears yellow in low pH (0.15) solutions and turns violet as the pH approaches 3.2.
Macsen Laboratories is the leading manufacturer and supplier of Methyl Violet 2B with ISO certification.
| PRODUCT SPECIFICATIONS | |
|---|---|
| PRODUCT NAME | Methyl Violet 2B |
| SYNONYMS | Basic Violet 1, C.I 42535 |
| CAS No | 8004-87-3 |
| Color Index No | 42535 |
| PubChem CID | 14345209 |
SPECIFICATIONS
| SR. No | Criteria | Limit/Specification |
|---|---|---|
| 1 | TYPE OF DYE | BASIC DYES |
| 2 | DESCRIPTION | GREENISH POWDER |
| 3 | HUE | VIOLET |
| 4 | SOLUBILITY | 25g/ l +/-5 |
| 5 | INSOLUBILITY | 0.5% |
| 6 | PH OF 2.0% SOLUTION | 5.10+/-0.05 |
| 7 | DYE CONTENT | 100.0% |
| 8 | STRENGTH Transmittance dE |
EQUAL 100.0% Up to 1 |
| 9 | SHADE | SIMILAR |
| 10 | WAVELENGTH OF MAX | 580 nm+/-20 nm |
| 11 | FOAMING | NIL |
| 12 | SPOT TEST ON PAPER | SIMILAR |
| 13 | MOISTURE CONTENT | 2.0% |
| 14 | DUSTING PROPERTIES | DE DUSTED |
| 15 | FINAL CONCLUSION | APPROVED |
Uses
- Methyl Violet 2B is used as a biological stain. It functions as a selective dye and enables the separation of Klebsiella pneumoniae from Enterobacter aerogenes and other gram-negative pathogens.
- It is also used as a dye for printing.
Resources
Biological Stains | Classification, Examples & Uses
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