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We do not offer international shipping to countries within the European Union

We can only ship non-hazardous products to Rest of World

Methylene Blue Trihydrate USP39 C.I. 52015

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Price: £4.95

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Stock Availability

On Shelf - Approx. UK delivery date: Wednesday the 22nd October 2025*

In bulk stock - ships within 10 - 12 Working Days (Excluding weekends and public holidays)

4 to 6 weeks approx. (Not guaranteed)

UK Shipping

Unfortunately, we are not currently accepting orders for Northern Ireland, Jersey and Guernsey.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible. Delivery could be much quicker than stated but is not guaranteed

Applications

Used for staining DNA and RNA

General

Methylene Blue is a dark greenish crystalline powder and is often used in Wright’s Stain and Jenner’s Stain. It can also be used for staining DNA and RNA

Specification

Conforms to USP Specification
Assay (Dry Basis): 98.0-103.0%
MF: C16H18CIN3S*3H2O
MW: 373.90
Loss on drying: 8.0-18%
Residue on ignition: <1.2%wt
Arsenic (As): <8ppm
Copper (Cu): <200ppm
Zinc (Zn): No Turbidity within 5 min
Residual Solvents:
Methylene Chloride: <126 ug/g
Chloroform: <12 ug/g
Trichloroethylene: <15 ug/g
1,4-Dioxane: <49 ug/g

Hazards

Hazard Phrases: Harmful if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Prec Phrases: Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Avoid breathing dust/fume/gas/mist/vapours/spray. Store in a well-ventilated place. Keep container tightly closed.

Harmful CLP Image