METHYLENE BLUE 95% AR
| Product Code | B-01721 | BRAND | Bio-Chem |
|---|---|---|---|
| Grade | FOR MICROSCOPY | CAS No | 61-73-4 |
| Molecular Formula | C16H18CIN3SxH2O | Molecular Weight | 319.86 |
| H.S.Code | 3204.13510 | Shelf Life | 60 Months |
| Purity | 95% |

Physical Properties
| Physical state at 20 °C | Solid | Colour | Dark green |
|---|---|---|---|
| Melting point/ Freezing point [°C] | 190 °C | Solubility in water [% weight] | Soluble in water |
| Vapour density | 13 | Odour | Odorless |
Packaging

Specification
| Appearance | Dark blue, crystalline powder with a copper-coloured sheen, or green crystals with a bronze-coloured sheen |
| Assay | 95.0 – 101.0% |
| Identity | Passes test |
| Solubility | Passes test |
| Methanol insoluble substances | Max. 1.0% |
| Related Substances | Passes test |
| Iron (Fe) | Max. 0.02% |
| Lead (Pb) | Max. 0.001% |
| Zinc (Zn) | Max. 0.01% |
| Sulphated ash (at 600°C) | Max. 1.0% |
| Loss on drying (at 105°C) | 8.0 – 22.0% |
Safety Information and Hazard Symbols

Symbol: GHS05 , GHS07, GHS08, GHS09
Signal Word: Warning
Hazardous Statement: H302
