Caustic soda, sodium hydroxide – pharmaceutical quality (Ph. Eur.)

About the product:

  • High quality pharmaceutical grade caustic soda
  • NaOH content min. 98%
  • Production of polypyrin, salicylic acid, sulfonamides, antiseptics
  • Production of medicines and ointments
  • Meets the requirements of the European Pharmacopoeia
  • Excellent pH regulator


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Pharmaceutical grade sodium hydroxide, declared by the manufacturer. An essential intermediate in the production of a wide range of pharmaceutical products. First of all, it is used in the production of influenza drugs as a sodium carrier, e.g. in the production of polopyrin.

Used in the production of salicylic acid and sulfonamides. Sodium hydroxide is used in the production of sodium ascorbate – an alternative to vitamin C sodium ascorbic acid. Obtained by neutralizing ascorbic acid with sodium hydroxide.

Caustic soda in pharmaceutical quality is also necessary in the production of iodoform. It is obtained from acetone or ethyl alcohol treated with iodine dissolved in sodium hydroxide as a result of the so-called iodoform reaction.

Pharmaceutical sodium hydroxide is used as an auxiliary in the production of medicinal ointments and creams for external use. Caustic soda in the form of an aqueous solution is used to neutralize carboxyl groups, and thus for the cross-linking of gelling substances, e.g. polyacrylic acids in therapeutic gels. This increases the pharmaceutical availability of active ingredients in hydrogel preparations.


  • NaOH content: 97-100%
  • CAS 1310-73-2
  • Appearance of white petals
  • Iron content Fe2O3 max. 10 mg / kg
  • NaCl content max. 200 mg / kg
  • Physical state Solid. [hygroscopic flakes that tend to stick together]
  • Melting point / freezing point 318.4 ° C
  • Initial boiling point and boiling range 1390 ° C
  • Odor Odorless.
  • White or almost white.
  • Evaporation rate Not applicable.
  • Flash point Not applicable.
  • Odor Threshold Not applicable.
  • Upper / lower flammability limit or upper / lower explosion limit Not applicable.
  • Density: 2.13 g / cm³ [20 ° C]
  • Solubility Easily soluble in the following materials: hot water.
  • Soluble in the following materials: methanol, ethyl ether, n-octanol and acetone.
  • Solubility in water at: room temperature (g / l)
  • 1090 g / l
  • Explosive properties Not considered to be a product presenting a risk of explosion.
  • Oxidizing properties: Not applicable.

Description automatically translated, binding is the Polish language version.









UN number

UN 1823

Packing group


Transport hazard class(es)