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In our shop, you can return most new and unused products within 30 days of delivery with no issues and receive a full refund.
If the error is on our end (e.g., wrong or damaged product), we will of course cover the return shipping costs. 🚚✅
The refund will be issued within 7 days after we receive your return.
In most cases, it's even faster!
| Name (English): | Methylene blue |
| Synonyms: | 3,7-Bis(dimethylamino)phen-5-thiazinium chloride |
| Species: | pure for analysis |
| Chemical formula: | C₁₆H₁₈ClN₃S |
| Molar mass: | 319.86 g/mol |
| EC no: | 200-515-2 |
| CAS number: | 61-73-4 |
| TESTED VALUE | NORM |
| Primary dye content | min. 99.0% |
| Maximum absorption (H₂O) | 663 - 667 nm |
| Absorption (1%, 1cm, water) | min. 2200 |
| Maximum absorption coefficient P±15 nm | 1,21 - 1,70 |
| Loss on drying (110°C) | max. 1.5% |
| Water-insoluble substances | max. 2.0% |
| Labeling | as specified |
| Appearance of solution (0.5 g/100 ml, H₂O) | dark blue, clear solution |
| Heavy metals (e.g. Pb) | max. 0.0001% |
| External appearance | reddish-brown powder |
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