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

Fluorescein Water Soluble C.I. 45350

Price: £9.95
Stock Availability:

Compare all Pack Sizes

Stock Availability
On Shelf - Approx. UK delivery date: Thursday the 19th March 2026*
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

Fluorescein sodium salt is a disodium salt of fluorescein and a noted pH sensitive fluorophore. Fluorescein sodium salt has been utilized in studies as a drug model, as a penetrating dye and also as a fluorescein tracer. Fluorescein sodium salt has also been used in vitro to quantify root dentin demineralization. Additional reported uses include microscopy, as a gain medium in dye laser use and to detect latent blood stains in vitro.

  • Assay: 90.0-1002.0%
  • Molecular Formula: C20H10O5Na
  • Molecular Weight: 376.27
  • Loss on drying: <17%
  • Lambda Max: 491nm in water

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 518-47-8
Einecs No: 208-253-0

Payment Methods

We can also accept a bank transfer (UK Only)

Source Chemicals Ltd