We supply sodium hydroxide for laboratory use in 500g containers, with discounts available for bulk orders over 4 items
This product is sold with a 96% minimum purity and impurity levels not exceeding 2% carbonate, 0.01% chloride, 0.05% sulphate, 0.001% lead and 0.1% potassium.
- We also offer further options with all our products, such as customised labelling and specific pack sizes
About sodium hydroxide: chemical and physical properties
Name: sodium hydroxide
Alternative names: caustic soda, lye
Molecular formula: NaOH
Molecular weight: 39.99 g/mol
Appearance: can be sold as crystals, flakes, beads, pellets, powder or in solution
Colour: colourless to white
Boiling point: 1388 degree Celsius (2534 Fahrenheit)
Melting point: 318 degree Celsius (605 Fahrenheit)
Solubility: can dissolve in alcohol, glycerol and water
Density: 2.13 g/cu (25 degree Celsius)
Stability: sodium hydroxide needs to be stored in a tightly closed container, to prevent exposure to carbon dioxide, which converts this compound to sodium carbonate. Sodium hydroxide is known for its ability to rapidly absorb carbon dioxide from water and air
Decomposition: It may release toxic fumes and gases when heated
Corrosivity: highly corrosive to certain metals and glass
pH: alkaline solution, ranging from pH 12 (0.05% w/w solution) to 14 (5% w/w solution)
Reactivity: sodium hydroxide can react with mineral acids, forming the respective salt. It can also react with weak acids, including sulphur dioxide and hydrogen sulphide and carbon dioxide, as well as amphoteric metals (such as zinc and aluminium) and their oxides, to generate complex anions. Lastly, organic acids also react with this compound to produce soluble salts.
Storage: This compound can be very dangerous, and safe storage is essential to ensure the staff safety. Sodium hydroxide must be stored away from acids and metals, in its original containers and tightly closed.
100% quality guarantee
All our products come with 100% quality guarantee and are usually shipped within 24 hours after purchase. If you need assistance with your order, a member of staff will be glad to help before, during and after your order to ensure our products meet your expectations. Simply contact us for further information or free technical advice.