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

Brilliant Blue G250 C.I. 42665

Price: £12.21
Stock Availability:

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Stock Availability
On Shelf - Approx. UK delivery date: Friday the 19th 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
  • Biological Staining
  • Textile Industry

Brilliant Blue or Coomassie Brilliant Blue is the name of two similar triphenylmethane dyes that were developed for use in the textile industry but are now commonly used for staining proteins in analytical biochemistry.

  • C.I. 42665
  • Molecular Formula: C47H48N3NaO7S2
  • Molecular Weight: 854.03 g/mol
  • Wavelength Absorption (lambda max): 610-615nm
  • Absorption Ratio: 0.95-1.25

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 6104-58-1
Einecs No: 228-060-5

Payment Methods

We can also accept a bank transfer (UK Only)

Source Chemicals Ltd