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Make Your Own Soap, Candles & Bath Goodies Easily Technical Info

Sodium Hydroxide (Lye-Caustic Soda)

ex. VAT £3.99 inc. VAT £4.79
Product code: SKU00177

Availability: In stock

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Buy in Bulk to save

  • Buy 40 for £3.49 (£4.19 incl. tax) each and save 13%
  • Buy 100 for £2.99 (£3.59 incl. tax) each and save 26%
  • Tell Me More

    Sodium Hydroxide, often referred to as Lye or Caustic Soda is one of the core ingredients used for Cold Process soap making. 

    When you are using it for Cold Process soap making,  remember to always add the Sodium Hydroxide to the water and never the other way round.  It is often mentioned to not use hard water for Cold Process soap making and so why not consider using Distilled Water which is readily available in DIY shops or Car Spares Shops.

    • Appropriate safety precautions (including rubber gloves and safety gogggles) must be followed when using this product as it can cause chemical burns.  It should not be used with children.
    • We would strongly recommend you read the MSDS information before purchasing and using this product.  
    • A Safety Sheet is sent with this product so look for it in the box.

    Available 1kg supplies in a granule/pellet form.

    Please note we are UNABLE to ship this product Internationally (as in outside of the UK).  

    We also cannot ship this by Royal Mail so please do not select this option.

    The picture shows gloves and goggles - these are NOT included with the Sodium Hydroxide but are a recommendation that safety protection is required.

    This product is 99% pure.

  • Technical Information (MSDS etc)

    View FileCertifcate of Analysis Sodium Hydroxide P5160    Size: (328.03 KB)
    View FileCertificate of Analysis Sodium Hydroxide P4155    Size: (642.6 KB)
    View FileMSDS Sodium Hydroxide    Size: (33.94 KB)
  • Customer Reviews

    Customer Reviews

    Review by Tanya (Posted on 09/07/2014)
    This is an update of my previous review. The new batch of Sodium Hydroxide disolves nicely without leaving behind grains which you wont want in your soap. Now a brilliant reliable product.
    Review by Tanya (Posted on 03/05/2014)
    The product doesn't always dissolve properly in the water and leaves small grains which you don't want in your soap. I use a small sieve lined with a small square of muslin, usually used for jam. This keeps the undissolved grains getting in my soap. It may mean you are supper fatting a little higher than expected but its better than having undissolved caustic soda in your soap. Perhaps flakes might work better.

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  • Delivery Charges & Timescales

    Parcels are despatched Monday to Friday (excluding Bank Holidays)

    With the exception of the Saturday/Sunday service, all deliveries are Monday to Friday


    UK Services Weight Cost ex VAT Service
    Standard (order by 12 noon for same day despatch M-F) 25kg 5.99

    1-2 working day

    Economy 25kg 4.99

    2-7 working days

    Express (order by 2pm for same day despatch on a next WORKING day delivery service)

    If you order on a Friday, this will be delivered on the following Monday.

    25kg 8.99

    by 12 noon (M-F)

    Saturday/Sunday (order by 12 noon on preceding Friday) 25kg 8.99

     by 5pm

     Highlands & Islands postcodes include AB30-56, FK17-21, G83, IV, KW1-17, PA20-39, PA41-49, PA60-78, KA27-28,  TR21-25 25kg  7.49 

    2-5 days 

     Northern Ireland, Isle of Man, offshore islands including HS1-9, ZE 1-3 25kg 9.99 

    2-5 days

     Channel Isles 25kg  15.00 

    2 days 

    Collect from Warehouse - order must be paid for online beforehand.  Please contact us about collection time.   0.00


     International  Weight  Cost ex VAT  Service 
    Austria, Belgium Czech Republic, Denmark, Eire, France,Luxembourg, Netherlands, Germany  25kg  13.99  2-3 days
     Hungary, Spain (mainland), Poland, Slovakia  25kg   15.99  3-6 days
     Italy, Lithuania, Slovenia, Sweden  25kg  16.99  3-6 days 
     Latvia  25kg  16.99 4-6 days 
     Croatia  25kg  18.00 4-6 days 
     Estonia, Portugal  25kg  18.99  4-5 days 
     Finland  25kg  19.50  4-5 days
     Greece  25kg  29.99  4-8 days 
     Romania  25kg  22.99   4-6 days

     Norway - please be aware we cannot send any liquids, fragrance oils, essential oils, food products to Norway.  

    We will require your PID or VAT number for Customs.

     25kg   29.99  4-6 days

  • Product Questions

    Product Questions

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