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90% of orders are delivered
next-day by ADR-approved couriers
Quality Accredited
Accredited to ISO 9001, ISO 14001,
ISO 13485 and ISO 45001
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Free pre- and post-sales technical support from our expert team
Need Sodium Hydroxide 20% w/w?
- We supply sodium hydroxide 20% w/w in 2.5L containers, with discounts available for bulk orders over 4 items
- MSDS is also available to download from our website
- We also offer other sodium hydroxide products, suitable for various applications and covering a wide range of concentrations
Chemical and Physical Properties of Sodium Hydroxide
In terms of appearance, sodium hydroxide can be sold in a pre-made solution, or in solid form, including colourless to white pellets, flakes or powder. In these forms, it is very hygroscopic and should be stored in a tightly closed container. Using these containers also prevents conversion to sodium carbonate by contact with carbon dioxide.It has both a high boiling point, at 1388 degree Celsius (2534 Fahrenheit) and a melting point, at 318 degree Celsius (605 Fahrenheit). In term of solubility, it’s soluble in water, methanol and glycerol. When heated to high temperatures, it can decompose and release sodium oxide fumes, which can be toxic.The best well-known property for sodium hydroxide its alkaline behaviour, and even a 0.05% solution already exhibits a pH of 12, gradually increasing to 13 and 14 with a 0.5% and a 5% solutions, respectively.In terms of corrosivity, it is particularly corrosive to some metals (amphoteric), including aluminium and zinc. In these reactions, caustic soda forms complex anions such as AlO2-, ZnO2- and H2. In addition, sodium hydroxide reacts with mineral acids, forming the corresponding salts, and also reacts with weak acids, such as gases hydrogen sulphide and carbon dioxide.Wide Range of Products
In addition to sodium hydroxide 20% w/w, we also offer a wide range of other sodium hydroxide products, including for laboratory and analytical uses. Our catalogue also expands to many other chemicals, suitable to many different industries, from pharmaceutical to petrochemicals. If you need assistance, a member of staff will be glad to help you before, during and after your order to ensure our products meet your needs. Simply contact us for further information or free technical advice.Please note: we only deliver to registered UK businesses at non-residential addresses with a minimum order value of £100 before VAT
We only supply to mainland UK, contact us on 0800 9555 798 for rates to Ireland.Please notify us if you have specific delivery requirements such as restricted access, requirement for a tail-lift delivery vehicle or pallet truck. Failure to notify us of a special delivery instructions can incur additional charges from our carriers.Need Bespoke Chemicals?
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Sodium Hydroxide 20% w/v Specification
Sodium Hydroxide 20% w/v Hazards
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Sodium Hydroxide 20% w/v Safety & Storage
Sodium Hydroxide 20% w/v Delivery
How do you calculate your delivery costs?
As many of the chemicals we supply are hazardous, we are legally obligated to use ADR licensed couriers who are specialists in carrying such goods. These specialist couriers cost more than regular delivery services, but your order will arrive safely and legally.
What is an ADR courier?
An ADR courier is specially trained and licensed to carry chemicals that are classed as hazardous for transport.
Can I collect my items from your warehouse?
Yes, but please contact us to prearrange this. Depending on the quantity of hazardous chemicals you want to collect, you may need to have applicable training or a current ADR licence to legally transport them away from our premises. We may not able to release goods without proof of this.
Can you deliver directly to my customers?
Yes, we can deliver directly to your customers with a delivery note that excludes invoice details, and we can add your logo and branding to the product labels. Contact us for more information.
How do I find out the delivery cost for my order?
If you want to find the exact delivery charge for an item or order, simply add the item or items you’re interested in to your basket and the delivery charge as well as any VAT will be calculated and itemised for you. No card details are taken at this point so you’re under no obligation to make a purchase.
How long does delivery take?
Firm delivery date within 24 hours. We always dispatch orders as soon as possible but please note that non-stock items can take around 5 days to reach you. Please contact us before ordering if you require an estimated delivery date or see our delivery information for more information.
Do you deliver on bank holidays?
Unfortunately not, our couriers only deliver on working days from Monday to Friday.
Can you ship to locations outside of mainland UK?
We cannot accept overseas orders on our website, however in some cases we are able to ship outside of mainland UK. Please contact us for further information.
Can I have a timed delivery slot?
We can offer an AM delivery service for some regions of the UK, please contact us for information before placing your order.
Sodium Hydroxide 20% w/v FAQs
Do you supply sodium hydroxide in bulk?
We offer sodium hydroxide in a variety of pack sizes so you can purchase exactly the amount you need. Bulk discounts are available for larger orders. To discuss your specific requirements and for more information on bulk purchases, please call us on 0800 9555 798.How much is sodium hydroxide?
Pricing is available at the top of this page. For bulk orders or if you have specific requirements, please contact us. Prices vary based on the grade and quantity you need, as well as your shipping requirements.What grade of sodium hydroxide do I need?
The grade of sodium hydroxide you need depends on your application. We offer a range of grades from commercial to pharma grades. If you’re unsure, our technical team can assist you.What grades and concentrations of sodium hydroxide do you supply?
We can supply technical, analytical, pharmaceutical, and food grades of sodium hydroxide in 0.1M, 10% w/w, 20% w/v, and 30% w/w concentrations. Contact us for other grades, as we may be able to source them for you.How much sodium hydroxide can I order?
Orders must meet a £100 minimum spend before VAT and shipping. There's no maximum limit; order as much as you need.What are the delivery options for sodium hydroxide orders?
We offer same-day, overnight, scheduled, and overseas deliveries. For other requirements, please call our team on 0800 9555 798.How do you ensure the purity of the sodium hydroxide you supply?
Our sodium hydroxide undergoes stringent testing against sales specifications. Certificates of Analysis (CoAs) are available on request, and we maintain ISO 9001 certification for quality assurance. We also offer a 100% quality guarantee.What are the safety measures for handling sodium hydroxide?
Please refer to the SDS for sodium hydroxide for safety information and perform a risk assessment for your specific application. Always wear appropriate PPE when handling chemicals.Can you provide Material Safety Data Sheets (MSDS) for sodium hydroxide?
Yes, you can download the SDSs for all grades of sodium hydroxide we supply here.Do you offer custom formulations or packaging for sodium hydroxide?
Yes, we can provide a bespoke blending and packaging service tailored to your needs. Call us on 0800 9555 798 to discuss your requirements.Do you provide after-sale support when I buy sodium hydroxide from ReAgent?
Our technical team is always on hand to provide after-sale support and answer any questions you may have. You can call them during business hours on Monday to Friday on 0800 9555 798.
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