Your cartClose

Your cart is currently empty.

Login Close

Lye - Caustic Soda / Sodium Hydroxide | UK SHIPPING ONLY

2 reviews
£7.46 Ex Vat
save 0
Shipping calculated at checkout.

Share on

Lye - Caustic Soda / Sodium Hydroxide 

Sodium Hydroxide (NaOH) is also known as Lye, Caustic Soda. 
This product, when dissolved in water, generates a lot of heat. Use extreme caution when adding product to water. 
Always add product to water never add water to product. Always use cold water (adding product to hot water may cause it to boil and spatter). Keep product tightly sealed in its original container. Product is a strong desiccant and will absorb enough moisture from the air to dissolve itself and become liquid. Product reacts strongly with metals containing Aluminum and produces Hydrogen gas. 

CAUTION: CAUSES SEVERE BURNS. Avoid contact with skin, eyes, mucous membranes and clothing. First Aid: External: Flood with water. Internal: Drink Large quantities of water. Call emergency room or physician immediately. Eyes: Flush with water for 15 minutes. Get prompt medical attention. Keep out of reach of children.

USES: Soap making, especially liquid soaps.  The cold process method is often used to make soap from Lye.  The Lye is mixed with water, and then base oils, butters and fragrances are added.  The gradual chemical reaction between the Lye and the fats eventually produces a solid soap.

This product can only be shipped to the UK

Specification Documents

Customer Reviews
4.0 Based on 2 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Lisa W.
United Kingdom United Kingdom

The product is fine, but the packaging is difficult to use

We use lye a lot for our small soap-making business and have always been happy with the lye itself. However, the packaging has gone downhill in the past three orders. Instead of the solid gusseted bottomed sturdy pouch, we have been receiving our lye in standard clear zip seal bags, double bagged. This has made handling the lye quite a bit more risky and complicated for the small amounts we need to measure out for each batch. I feel that if this is the new packaging for the foreseeable future, you should update your website. But I would prefer if you could just go back to the original packaging pictured on your website, if possible. Thank you.

Glenys M.
United Kingdom United Kingdom


I have used this company for a few years now everything is always packed so well, excellent quick service and they always have everything I need in stock. The Lye is always packed safely too.

People who bought this product also bought

Lye - Caustic Soda / Sodium Hydroxide | UK SHIPPING ONLY