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Sodium Hydroxide CAUSTIC SODA 99%
Sodium Hydroxide CAUSTIC SODA 99%
Sodium Hydroxide CAUSTIC SODA 99%
Sodium Hydroxide CAUSTIC SODA 99%
Sodium Hydroxide CAUSTIC SODA 99%
Sodium Hydroxide CAUSTIC SODA 99%

Sodium Hydroxide CAUSTIC SODA 99%

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Sodium hydroxide (CAUSTIC SODA) available in 500g, 1500g, 2500g, 5000g.

Sodium Hydroxide 99%

Molecular formula: NaOH


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Sodium Hydroxide, more commonly known as Caustic Soda or, Lye is an inorganic compound. Sodium hydroxide is a colourless, crystalline solid. It is highly soluble in water, and it readily absorbs moisture and carbon dioxide from the air.

Sodium Hydroxide is a co-product of chlorine production that stays stable even in heat and light exposure. It is a highly versatile substance that is used in a variety of manufacturing processes.

As one of the simplest hydroxides, teachers often use Lye alongside water and acidic hydrochloric acid to demonstrate the pH scale to chemistry students.

What Is Caustic Soda Used For?

In Soaps and Detergents

Manufacturers use caustic soda for soap making and also in making detergents for both domestic and commercial use. It is used more often than potassium hydroxide because it is more affordable, and a lesser quantity of Lye is needed. Lye is also preferred in soap making processes because of its inorganic base and reagent nature. When dissolved in water, lye generates sodium and hydroxyl ions, which combine to cause saponification (the conversion of fatty acids into soap).

As a Cleaning Agent 

Caustic soda is also used as an industrial cleaning agent. When heated in water, caustic soda can help remove oil, grease and protein deposits from equipment. Surfactants can be added to the Lye solution to stabilize dissolved substances and thus prevent redeposition. A mix of Lye and water serves as a powerful degreaser on stainless steel and glass baking dishes. It is also mixed with aluminium to produce sodium aluminate in industrial production.

Unblocking Drainages

Caustic soda offers a home remedy for clogged drainages without having to call a plumber. Often, drainages get clogged by dirt, hair and other organic substances. Once in contact with these materials, lye causes an exothermic reaction and breaks down the particles obstructing the free passage of water through the drain.

To unblock your clogged drains, mix lye in cold water and pour directly into the blocked drain and let it simmer. After some time, pour hot water into the drain. If it remains blocked, you may repeat the process until the drain flows free.

In Paper Making

Lye is also used in the pulp and paper industry. The compound plays a significant role in the pulping and bleaching processes because of its alkaline properties, making it essential in the cooking of kraft pulps. Sodium hydroxide helps extract cellulose fibres from the raw wood material used to make paper.

 Caustic is also useful in the production of biodiesel and serves as an additive in mud drilling by increasing alkalinity in bentonite mud systems. It increases the mud viscosity and neutralizes any acidic gas such as hydrogen sulfide and carbon dioxide, which are usually encountered in mud drilling.

Can you still buy caustic soda?

Because people now use caustic soda to make illegal drugs, it's harder to buy large quantities than in the past. However, different sizes are available in stores and online. Thus, it is not uncommon to find customers asking where to buy sodium hydroxide UK.

Where Can I Buy caustic soda in the UK?

You can get caustic soda at sodium hydroxide suppliers UK or by simply clicking here. There is a variety of size options to choose from, ranging from 500 grams to 5000 grams. You're guaranteed to get a product that is 99% pure, surpassing all other products with a similar effect.

Are Caustic Soda And Baking Soda The Same Thing?

Caustic soda should not be confused with Sodium Bicarbonate, that is, baking soda. They are vastly different in composition and usage. While the latter is safe for consumption, the former is not. It is harmful if one ingests it.

Lye may cause chemical burns and may induce permanent blindness if it comes in contact with the eyes. Thus, protective equipment, like rubber gloves, safety clothing, and eye protection, should always be used when handling sodium hydroxide or its solutions. If it comes in contact with the skin, wash with water continuously for at least ten to fifteen minutes. If ingested, drink a lot of water as first aid, and seek immediate medical attention.


Avoid contact with skin, eyes, mucous membranes and clothing.


  • Outer: Fill with water.
  • Internal: Drink plenty of water.
  • Eyes: Rinse with water for 15 minutes.

Call an ambulance or a doctor immediately. Keep out of the reach of children.

    Corrosive product !!!

    Your product will be shipped in a sturdy, reusable HDPE screw cap container with pre-printed warnings and safety information.

    Buyer assumes all responsibility for safety and use not in accordance with directions.


    Containers used for caustic Soda 1.5 kg and 2.5 kg are the same.

    Although the 1.5 kg may look half full rest assured that the weight is correct and you will received a correct amount.





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