Molekula
Methylene blue solution, 1% w/v aq. soln.
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Certificate of Analysis with every batch
Methylene blue solution is a synthetic dye and redox indicator widely used in biology, medicine, and chemical research for staining, oxygenation studies, and microbial testing. This 1% w/v aqueous solution provides a stable, ready-to-use form of methylene blue (CAS 61-73-4, C16H18ClN3S, MW 319.85) with no signal word hazards. Stored at ambient conditions, it maintains potency for extended periods. Molekula supplies Methylene Blue Solution from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.
Overview
- SKU
- 90030759
- CAS Number
- 61-73-4
- IUPAC Name
- [7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium chloride
- EC Number
- 200-515-2
- Molecular Formula
- C16H18ClN3S
- Molecular Weight
- 319.85
- Exact Mass
- 319.091
- SMILES
- CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]
- InChIKey
- CXKWCBBOMKCUKX-UHFFFAOYSA-M
- InChI
- InChI=1S/C16H18N3S.ClH/c1-18(2)11-5-7-13-15(9-11)20-16-10-12(19(3)4)6-8-14(16)17-13;/h5-10H,1-4H3;1H/q+1;/p-1
- PubChem CID
- 6099
Synonyms
- Basic blue 9
- C.I. Basic Blue 9
- Chromosmon
- methylene blue
- Methylene Blue anhydrous
- Methylene Blue BB
- Methylene Blue N
- Methylthioninium chloride
- Solvent blue 8
- Swiss Blue
See all 5 other grades of CAS 61-73-4 →
Frequently asked questions
What is a 1% w/v aqueous solution of methylene blue commonly used for?
This solution is widely used in microbiology for simple staining, in Loeffler's methylene blue stain and as the counterstain in Ziehl-Neelsen acid-fast staining, as a redox indicator in titrations, and in medical applications like treating methemoglobinemia.
What is the chemical formula and molecular weight of methylene blue?
The formula is C₁₆H₁₈ClN₃S, and the molecular weight is 319.85 g/mol.
How should this methylene blue solution be stored?
Store at ambient temperature in a tightly sealed container, protected from light to prevent degradation.
What grade or purity level is available for this methylene blue solution?
Molekula supplies this as a laboratory-grade reagent, suitable for analytical, medical, and research applications.
Can Molekula supply this methylene blue solution in bulk quantities?
Yes, bulk quantities are available upon request—please contact our sales team for pricing and lead times.
What documentation comes with an order of this product?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet.
Related products
Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.