Crystal Violet (catalogue No. 101408) is an ACS reagent and Reag. Ph. Eur. grade solid indicator dye (C.I. 42555) supplied by MilliporeSigma / Merck. It is used in analytical chemistry for visual endpoint detection in titrations and indicator applications requiring a distinct violet colour change. The product is offered in three convenient packaging options – 25 g, 100 g and 1 kg – to meet the needs of laboratories of all sizes.
Crystal Violet (C.I. 42555), catalogue No. 101408, is a high-purity organic indicator dye supplied by Merck. Provided as a solid reagent meeting ACS reagent and Reag. Ph. Eur. quality standards, this dye is used in analytical chemistry, including complexometric titrations and other methods requiring clear visual end-point indication. Its intense violet colour and reliable performance make it suitable for a wide range of laboratory applications where visual detection of reaction progress or endpoint is needed. The product is offered in 25 g, 100 g and 1 kg pack sizes to support small- and large-scale workflows.
Advantages
- High-purity indicator dye for analytical and titrimetric applications.
- Distinct violet colour change provides clear endpoint visibility.
- Available in 25 g, 100 g and 1 kg pack sizes for flexible laboratory use.
- Solid powder form allows precise dosing and long storage stability.
- Suitable for water analysis, quality control and research labs.
Technical specifications
| Product form | Solid powder |
| Chemical name | Crystal Violet (C.I. 42555) |
| Synonyms | Gentian violet, methyl violet 10 B |
| CAS number | 548-62-9 |
| Grade | ACS reagent, Reag. Ph. Eur. :co |
| Empirical formula | C25H30ClN3 |
| Molecular weight | 407.98 g/mol |
| Pack sizes | 25 g; 100 g; 1 kg |
| Typical applications | Complexometric titrations, endpoint indication, analytical assays |
| Storage conditions | 2–30 °C, dry |
| Brand | Merck |
