Sodium hydroxide (caustic soda) is essentially odorless in its pure solid form. It has no place as an olfactive ingredient in perfumery — it is a strong base used only as a pH adjuster or saponifier in cosmetic chemistry, and any perceived sharpness is chemical irritation rather than a true smell.AI · claude-opus-4-7
Composition, IFRA restriction figures, allergen concentrations and where this material is bought are part of Perfume Foundry’s curated library and need an account. Create one or sign in.
Perfume and Flavor Chemicals, page 1262.
Fused solid material of crystalline structure.
It absorbs moisture and carbon dioxide from the air.
Practically odorless. Aqueous solutions have a typical alkaline, bland, soapy taste at concentrations below 500 ppm.
Aqueous solutions have a typical alkaline, bland, soapy taste at concentrations below 500 ppm.
Sodium hydroxide is strongly corrosive to animal tissue. An aqueous solution at 0.5% NaOH has a pH of 13, which is harmful to the skin.
The use of Sodium hydroxide in flavors is generally confined to that of being an auxiliary chemical in the process of making caramel, treating starches, adjusting acidity, etc. in food products.
Produced by electrolysis of sodium chloride solution and from calcium hydroxide and sodium carbonate (soda).