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

Eosin B C.I. 45455

Price: £10.95
Stock Availability:

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Stock Availability
On Shelf - Approx. UK delivery date: Wednesday the 01st 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.

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
  • Biological Dye

Eosin B is a readily water-soluble, red dye with a green fluorescence ( Lambdamax. 514 nm), which is commonly used in histology and microbiology. The dye binds in the acidic pH range (pH 2.5 - 3.5) to proteins. This complex absorbs light at 536 - 544 nm.

  • C.I. 45400
  • Molecular Formula: C20H6Br2N2Na2O5
  • Molecular Weight: 624.08 g/mol
  • Absorption Wavelength (@ Lambda Max): 515nm
  • Absorption Ratio: 1.22
  • Specific Absorbtion (A1% in 10mm cell): 962
  • Loss on drying: <10%

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 548-24-3
Einecs No: 208-943-1

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We can also accept a bank transfer (UK Only)

Source Chemicals Ltd