Facebook

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

Neutral Red Indicator C.I. 50040

Price: £7.95
Stock Availability:

Compare all Pack Sizes

Stock Availability
On Shelf - Approx. UK delivery date: Thursday the 10th April 2025*
In bulk stock - ships within 4 - 8 Days (Excluding weekends and public holidays)
4 - 6 Weeks Approx.
UK Shipping

We can only ship to Northern Ireland where a Royal Mail postal option has been chosen at checkout.

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
  •  Biological Dye
  • pH Indicator

Neutral Red stains lysosomes red. It is used as a general stain in histology, as a counterstain in combination with other dyes, and for many staining methods. Together with Janus Green B it is used to stain embryonal tissues and supravital staining of blood. Can be used for staining Golgi apparatus in cells and Nissl granules in neurons. It can be used to stain cell cultures for plate titration of viruses. Neutral Red can also be added to some growth media for bacteria and cell cultures. This dye also acts as a pH indicator, changing from red to yellow between the pH 6.8-8.0.

  • C.I.50040
  • Minimum Assay: >65%
  • Molecular Formula: C15H17ClN4
  • Molecular Weight: 288.78 g/mol
  • Melting Point: 290 °C
  • Absorption Wavelength: 539nm
  • Specific Absorbtion: 6.70
  • Loss on Drying: <8.65%
  • Colour Transition: pH 6.8 (Red) -pH 8.0 (Yellow)

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 553-24-2
Einecs No: 209-035-8

Payment Methods

We can also accept a bank transfer (UK Only)

Latest Feedback

  • Rating:
    feedback feedback feedback feedback feedback
    Among the best customer service ever via Amazon.
  • Rating:
    feedback feedback feedback feedback feedback
    Item exactly as described and of high purity. Well packed for delivery as well.
  • Rating:
    feedback feedback feedback feedback feedback
    Very helpful and courteous emails from seller, as I had misunderstood details of purchase. A refund was very promptly sent. Thank you very much for your understanding.
  • Rating:
    feedback feedback feedback feedback feedback
    Prompt delivery no problems would recommend
Source Chemicals Ltd