International Shipping

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

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

Toluidine Blue O C.I. 52040

Toluidine Blue O C.I. 52040
Price: £346.46
Stock Availability:

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Stock Availability
On Shelf - Approx. UK delivery date: Tuesday the 23rd September 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.

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

Toluidine Blue O is a dark green to black powder and is often used to demonstrate mast cell granules and Nissl substance. Also known as Basic Blue 17

  • Dye Content: >80%
  • Molecular Formula: C15H16ClN3S
  • Molecular Weight: 305.83 g/mol
  • Melting Point: 156-158 °C(lit.)
  • Absorptivity (1%/1cm): >1200
  • Loss on drying: <8.0%
  • Solubility (0.1% dist. Water): Clear blue solution

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 92-31-9
Einecs No: 202-146-2

Payment Methods

We can also accept a bank transfer (UK Only)

Source Chemicals Ltd