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Caustic soda 25 / 33 / 45 / 50%

Fields of application

  • Aluminium industry
  • Chemical industry
  • Desulphurisation
  • Food industry 
  • Glass & Glass fibres
  • Mineral oil industry
  • Pulp and paper industry 
  • Soaps, surfactants and cleaning agents
  • Textile industry, rayon & staple fibres
  • Water treatment


  • Sodium Hydroxide Solution (NaOH)  Membrane Process
  • Caustic Soda Solution
  • CAS-No. 1310-73-2 (NaOH)
  • Molar mass: 39.997 g/mol

Caustic soda is a clear, colorless solution of sodium hydroxide in water. The solution is highly alkaline, highly corrosive and aggressive on a range of materials such as aluminium, magnesium, zinc, glass, enamel and many plastic materials. Caustic soda is approved in the EU as food additive under E 524.

Our caustic soda fulfils the purity criteria for food additives in accordance with the Additive Registration Ordinance (additives authorized), regulation (EU) No. 231/2012, Food Chemicals Codex (FCC) and DIN EN 896 (products for the treatment of water for human use).


Sodium hydroxide solution:

  • 25 %
  • 33 %
  • 45 %
  • 50%


Vestolit GmbH
Paul-Baumann-Str. 1
45772 Marl

T. +49 2365 9549-888
F. +49 2365 9549-4000


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