Caustic Soda 20% w/v

Caustic Soda 20% w/v



From: £30.13

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  • Custom packaging
  • Personalised labelling
  • Specific pack sizes
  • Bespoke blending
  • Bulk quantities
  • Different grades available

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  • Product Information
  • Specification
  • Hazard Information
  • Precautionary
  • Shipping Statements
  • MSDS


Why Buy Caustic Soda 20% w/v Online from UK Chemical Suppliers, ReAgent Chemicals?

ReAgent can supply caustic soda in a 20% w/v solution in 1L, 2.5L and 25L containers. Please contact us for a quote. This solution is made according to very strict conditions, typically ranging between 19.7% and 20.3%. Further details can be found in the Sales Product Specification available online.


Physical and Chemical Properties of Caustic Soda

  • Chemical formula: NaOH
  • Molecular weight: 39.99 g/mol
  • Other names: Sodium hydroxide, soda lye or white caustic
  • Form: White crystals, usually sold in pellets, flakes or granular form.
  • Odour: odourless
  • Colour: As a solid, it forms white crystals, but in solution it’s colourless
  • Solubility: Caustic soda is highly soluble in water, only slightly soluble in alcohol and insoluble in non-polar solvents
  • Relative density: 1.186 ( at 20 degree Celsius)
  • Boiling point: 1388 degree Celsius
  • Melting point: 232 degree Celsius
  • Corrosivity: highly corrosive to metals, including aluminium, zinc and tin
  • pH: Highly alkaline solution, ranging from pH 12 in a 0.05% to pH 14 in a 5% solution
  • Reaction with air: It can rapidly absorb water and carbon dioxide from air
  • Chemical stability: Not stable if in contact with air, as it can form carbonates by reacting with carbon dioxide
  • Highly hygroscopic
  • Exothermic reactions: the dissolution of caustic soda in water or with acids and organic halogens is highly exothermic and as such, it releases a significant amount of heat. For safety reasons, this should be taken into consideration when preparing these solutions


Wide Choice of Products

ReAgent can offer a wide range of soda caustic products, including in pellets or solution, as well as different concentrations in ready-made solutions. Simply contact us for a quote or free technical advice, and a member of our customer service team will be glad to help.




MSDS Files

The following files are available to download:

Product IDProductpost_statusBulkDownload SDS File
3679Caustic Soda 20% w/vpublish1093 - 1093 - SDS10087.pdf

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 990 3258 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.

0800 990 3258