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Our most popular iodine product

  • This is our most popular iodine product
  • We supply iodine in 100g containers, with discounts available for bulk orders
  • This product is sold with 99.8% w/w purity levels and minimum levels of impurities (further information can be found in the Sales Product Specification)

Iodine and the Napoleonic wars

This element was discovered in 1811 by French chemist Bernard Courtois. His family was involved in the manufacture of saltpeter, which was vital during the Napoleonic wars for the production of gunpowder. In France, the process required the addition of sodium carbonate, typically extracted from seaweed from Normandy and Brittany. During the final step to isolate sodium carbonate, seaweed was burned, washed in water and then thoroughly destroyed by the addition to sulphuric acid.

A strange purple smoke

It was during this reaction that Courtois once added too much sulphuric acid and saw a cloud of purple smoke rising from the ashes. He also noted that this vapour could crystallise, forming dark crystals. He suspected this was a new element, but unable to pursue it further, sent some samples to several chemists, including Charles Desormes and Nicolas Clement. The pair wrongly described the properties of this new compound in 1813, but only a few months later Joseph Gay-Lussac set the record right by suggesting it was an element, which he named iode (from the Greek work “iodes” meaning violet). English chemist Humphry Davy also managed to get some samples and noted its similarity to chlorine. Both Davy and Gay-Lussac argued about who was the first to identify the new element, but always acknowledged Courtoir as the first scientist to isolate it.

Fast delivery

  • Need a fast delivery? All our products are usually shipped within 24 hours after purchase.
  • If you need any assistance, simple contact a member of our customer service team, and they will be glad to help before, during and after your purchase
  • All our products also come with 100% quality guarantee


MSDS Files

The following files are available to download:

Product ID Product post_status Bulk Download SDS File

Please note: we only deliver to registered UK businesses at non-residential addresses with a minimum order value of £100 before VAT

We only supply to mainland UK, contact us on 0800 990 3258 for rates to Ireland.

Please notify us if you have specific delivery requirements such as restricted access, requirement for a tail-lift delivery vehicle or pallet truck. Failure to notify us of a special delivery instructions can incur additional charges from our carriers.

Looking for further options on this product?

  • Custom packaging
  • Personalised labelling
  • Specific pack sizes
  • Different grades available
  • Bespoke blending
  • Bulk quantities

Call 0800 990 3258 for details or Contact Us

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