Definition of sodium hydroxide in English:

sodium hydroxide


  • A strongly alkaline white deliquescent compound used in many industrial processes, e.g., the manufacture of soap and paper.

    • ‘For nearly 60 years, the processing of this starch has hardly changed, relying always on the action of a corrosive alkali, sodium hydroxide, to slowly dissolve rice protein and release the starch.’
    • ‘They crush serpentine, dissolve it in sulfuric acid, treat part of it with sodium hydroxide, and the result will react with carbon dioxide to produce magnesium carbonate or magnasite.’
    • ‘A tanker carrying a cargo of caustic soda, which is also known as sodium hydroxide, a very corrosive chemical, overturned at 10.15 am, spilling it across the eastbound carriage.’
    • ‘In the laboratory the normal method of methane preparation is to combine one part sodium acetate and two parts sodium hydroxide.’
    • ‘In oven cleaners, lye and sodium hydroxide can burn skin, eyes, and the respiratory tract.’
    • ‘In a very alkaline environment such as is provided by sodium hydroxide, paraphenylene diamine becomes a powerful, rapid developer.’
    • ‘Fats can be reduced in a solution of sodium hydroxide to produce glycerol and another kind of lipid, soap.’
    • ‘Platinum also dissolves in hot alkalis such as hot sodium hydroxide or potassium hydroxide.’
    • ‘Be familiar with and observe safety guidelines when working with hazardous chemicals such as sodium hydroxide and bleach.’
    • ‘Currently, sodium hydroxide is used to break down starch and protein particles and extract, them from the bran.’
    • ‘Bases such as sodium hydroxide that contribute one hydroxyl ion to an acid-base reaction, have an equivalent weight equal to their gram molecular weight.’
    • ‘In the laboratory benzene can be made by the action of heat on a mixture of sodium benzoate and sodium hydroxide.’
    • ‘Hydrochloric acid reacts with sodium hydroxide to produce salt and water.’
    • ‘Solid sodium hydroxide is obtained by evaporating the water.’
    • ‘The contractor realized that the acid caused the problem and tried to neutralize it with an alkaline liquid solution of sodium hydroxide.’
    • ‘He invented a method for producing sodium hydroxide (caustic soda) from chalk, salt, sulfuric acid, and coal.’
    • ‘Carboxyl groups can also react with alkali metal bases such as sodium hydroxide to form water-soluble carboxylic salts.’
    • ‘By melting silica mixed with sodium hydroxide or calcium oxide one is able to interrupt the long chains of silicon-oxygen bonds to form more easily melted glasses.’
    • ‘The applications of chlorine and sodium hydroxide are so varied that hardly a consumer product exists that does not depend on one or both of these compounds.’
    • ‘Primary alkaline batteries use sodium hydroxide or potassium hydroxide as the electrolyte.’


sodium hydroxide

/ˈˌsōdēəm hīˈdräkˌsīd/