Sodium Hydroxide Pearls

27th October 2018



An image showing Sodium Hydroxide Pearls in a 1kg container

Looking for sodium hydroxide pearls?

  • We supply sodium hydroxide pearls in 1 kg containers, with discounts available for bulk orders

  • This product is sold with a 96% minimum purity and impurity levels not exceeding 2% carbonate, 0.01% chloride and 0.1% sulphate

  • We also offer further options with all our products, from personalised packaging to bespoke blending

How is sodium hydroxide produced?

This compound is typically synthesised via electrolysis by the chloralkali process. Once the reaction is complete, chlorine gas is separated from solid sodium hydroxide after evaporation of water.

This compound can also be produced by mixing water and pure sodium metal, with by-products gas and heat. This reaction can be very dangerous, especially if using large amounts of sodium. Due to its spectacular effect, often bursting into flames, it’s commonly used for student demonstrations in schools around the world. Despite the popularity in an a academic environment, it’s not an economically feasible reaction to produce sodium hydroxide.

Older methods to produce sodium hydroxide

Before the chloralkali process was developed, sodium hydroxide was produced by mixing sodium carbonate and calcium hydroxide, in a method called causticizing.

Ca(OH)2 Na2CO3 → CaCO3 → 2 NaOH
This reaction was replaced by the Solvay method, developed in the late 19th century, and this method was eventually replaced by the electrolytic method used today only a few years later.

Is sodium hydroxide safe?

Sodium hydroxide is an extremely strong alkali, and can easily decompose living tissue, potentially causing serious burns. It may also cause permanent blindness if in contact with eyes. To avoid these effects, it’s essential to use appropriate protective clothing, including rubber gloves, eye protection and safety clothing. First aid includes washing affected area with copious amounts of water and, if needed, seeking medical help.

In terms of storage, this chemical must be kept separate from metals and strong oxidising chemicals. It’s highly corrosive and can release flammable hydrogen gas on contact with some metals, including aluminium. It’s also corrosive to glass, and therefore should be stored in a plastic container.

Open an account with us

If you’re a regular customer, you may wish to open an account with us to make your order easier and faster to process. If so, please contact us and a member of our sales team will be glad to help. All our products come with 100% guarantee and are usually shipped within 24 hours after purchase.


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