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Thermo Scientific Chemicals Methylene Blue, high purity, biological stain
Description
Methylene blue is used as a dye in different staining procedures viz. Wright's stain and Jenner's stain. It also serves as an indicator and medicine. Further, it is used to examine RNA and DNA under the microscope or in a gel. It is widely used as a redox indicator in analytical chemistry. It acts as a photosensitizer utilized to generate singlet oxygen in order to make organic peroxides by a Diels-Alder reaction. It is also used in the sulfide analysis. It plays an important role in aquaculture to treat fungal infections.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
Methylene blue is used as a dye in different staining procedures viz. Wright′s stain and Jenner′s stain. It also serves as an indicator and medicine. Further, it is used to examine RNA and DNA under the microscope or in a gel. It is widely used as a redox indicator in analytical chemistry. It acts as a photosensitizer utilized to generate singlet oxygen in order to make organic peroxides by a Diels-Alder reaction. It is also used in the sulfide analysis. It plays an important role in aquaculture to treat fungal infections.
Solubility
Soluble in water, alcohol, acetic acid, glycerol and chloroform. Insoluble in ether.
Notes
Incompatible with strong oxidizing agents.

Specifications
Specifications
Melting Point | ∼180°C (decomposition) |
Beilstein | 3599847 |
Merck Index | 14,6060 |
Solubility Information | Soluble in water,alcohol,acetic acid,glycerol and chloroform. Insoluble in ether. |
Formula Weight | 319.86 (Anhydrous) |
Quantity | 100 g |
Chemical Name or Material | Methylene Blue, biological stain |
Grade | High purity |
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Certificates
Certificates
A lot number is required to show results for certificates. To find your lot number on previous orders use our order status area.
Lot Number | Certificate Type | Date | Catalog Number |
---|---|---|---|
10252160 | Certificate of Analysis | 20/08/2024 | A18174.14,A18174.36,A18174.22 |
10252159 | Certificate of Analysis | 20/08/2024 | A18174.14,A18174.36,A18174.22 |
10250159 | Certificate of Analysis | 02/04/2024 | A18174.14,A18174.36,A18174.22 |
10245673 | Certificate of Analysis | 09/02/2023 | A18174.14,A18174.36,A18174.22 |
10241648 | Certificate of Analysis | 11/07/2022 | A18174.14,A18174.36,A18174.22 |
Safety and Handling

- Methylene Blue, high purity, biological stain
- Warning
- Acute toxicity Category 4
- H302-Harmful if swallowed.
- P301+P312-IF SWALLOWED: Call a POISON CENTER or doctor/physician/ if you feel unwell.
- MIXTURE LIST-Contains : Methylene Blue
RUO – Research Use Only
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