Molekula
Toluidine Blue Powder C.I. 50240
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Toluidine Blue Powder C.I. 50240 is a synthetic thiazine dye with antimicrobial, antiprotozoal, and metachromatic staining properties, widely used in medical diagnostics, microbiology, and research for detecting nucleic acids, fungi, and certain bacteria. It is also employed in textile dyeing and as a reagent in analytical chemistry. This chemical has a CAS number of 92-31-9, with the molecular formula C15H16ClN3S and a molecular weight of about 305.8 g/mol, as calculated from its formula (the listed value of 960.80 does not match this formula). It is classified as a hazardous substance with the signal word "Danger" and should be stored at ambient conditions. Molekula supplies Toluidine Blue Powder C.I. 50240 from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
5 g — £25.00 per pack ex VAT · £30.00 inc. VAT
-
10 g — £45.00 per pack ex VAT · £54.00 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Dark green to very dark green/blackish powder |
| Loss on Drying | ≤8.0% (@110℃) |
| Solubility | Clear solution (in 0.1% water) |
| Dye Content | ≥80.0% |
| Absorptivity | ≥1200 (1%/1cm; at l max; 0.005 g/L in water) |
| Absorption maxima | 628 – 633 nm (in water) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90028167 |
| CAS Number | 92-31-9 |
| IUPAC Name | (7-amino-8-methylphenothiazin-3-ylidene)-dimethylazanium chloride |
| Molecular Formula | C15H16ClN3S |
| Molecular Weight | 960.80 |
| Exact Mass | 305.0753 |
| SMILES | CC1=CC2=C(C=C1N)SC3=CC(=[N+](C)C)C=CC3=N2.[Cl-] |
| InChIKey | GEDVVYWLPUPJJZ-UHFFFAOYSA-N |
| InChI | InChI=1S/C15H15N3S.ClH/c1-9-6-13-15(8-11(9)16)19-14-7-10(18(2)3)4-5-12(14)17-13;/h4-8,16H,1-3H3;1H |
| PubChem CID | 7083 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 3212900 |
| Tariff Code | 3212900000 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Basic Blue 17
- Blutene chloride
- C.I. Basic Blue 17
- Gabilin
- Klot
- Menodin
- Tolazul
- TOLONIUM CHLORIDE
- Toluidine Blue O
- Toluidine Blue OO
Frequently asked questions
What is Toluidine Blue Powder (C.I. 50240) used for?
Toluidine Blue is primarily used as a biological stain in histology and microbiology, as well as in medical applications for detecting oral and skin cancers, and in some textile dyeing processes.
What is the chemical formula and molecular weight of Toluidine Blue Powder?
The chemical formula is C15H16ClN3S, and the molecular weight is about 305.8 g/mol, as calculated from the formula (the listed value of 960.80 does not match this formula).
How should Toluidine Blue Powder be stored?
Store in a tightly sealed container at ambient temperature, away from direct light, moisture, and incompatible substances.
What grades of Toluidine Blue Powder does Molekula supply?
Molekula supplies analytical and reagent-grade Toluidine Blue Powder, suitable for laboratory and research applications.
Can Molekula supply Toluidine Blue Powder in bulk quantities?
Yes, Molekula can provide Toluidine Blue Powder in bulk, with quantities and packaging tailored to your specific requirements.
What documentation comes with an order of Toluidine Blue Powder?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.