Need sodium hydroxide for analytical use?
We supply in 500g containers, with bulk discounts for orders over 4 items
- This product is sold with a minimum level 98% purity and low levels of impurities as described in the Sales Product Specification (available to download from our website)
- We also offer further options with our products, including custom labelling and bespoke blending
What is sodium hydroxide for?
As a strong base, this compound is used in many different industrial applications, of which one of the most important is the paper industry. Other uses include manufacture of soap, organic synthesis, pH regulation and additive in the drilling industry.
Paper manufacture: sodium hydroxide is commonly used in the initial steps to pulp wood or regenerated fibres. This compound is a key ingredient in the white liquor solution used to separate cellulose from lignin, and is used subsequently to bleach the resulting brown wood pulp. It is vital for all these processes to maintain a strong alkaline pH, typically above 10.5.
Dissolving metals: Sodium hydroxide reacts with aluminium, releasing hydrogen gas. This reaction is very useful to convert polished surfaces to satin-like finishes, without further methods which may damage the surface. The same reaction is also used to refine bauxite ores (containing aluminium) which is converted to aluminium oxide.
Esterification reactions: sodium hydroxide is traditionally used in the manufacture of soap. In contrast with potassium hydroxide, which produces soft and liquid soap, sodium hydroxide produces hard solid soap. The same process is also used to produce biodiesel, but in this case the reaction needs to be conducted with anhydrous sodium hydroxide, otherwise the result would be soap.
Food preparation: Sodium hydroxide is often used to wash fruits and vegetables, as well as during cocoa processing and caramel production, among others.
Cleaning agent: this compound can be used as an industrial cleaner, to clean large equipment and large storage tanks. It can remove protein and grease residues, so it’s commonly used to clean and unblock pipes in industrial and domestic settings.
Household applications: Common household uses include in hair straighteners, cleaning agents and paint strippers.
We are very proud of our friendly customer service, and if you need any help, a member of staff will be glad to assist you before, during and after your purchase to ensure our product meet your needs. Simply contact us for further information or free technical advice.