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.’
    • ‘Platinum also dissolves in hot alkalis such as hot sodium hydroxide or potassium hydroxide.’
    • ‘He invented a method for producing sodium hydroxide (caustic soda) from chalk, salt, sulfuric acid, and coal.’
    • ‘In oven cleaners, lye and sodium hydroxide can burn skin, eyes, and the respiratory tract.’
    • ‘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.’
    • ‘Be familiar with and observe safety guidelines when working with hazardous chemicals such as sodium hydroxide and bleach.’
    • ‘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.’
    • ‘Fats can be reduced in a solution of sodium hydroxide to produce glycerol and another kind of lipid, soap.’
    • ‘Carboxyl groups can also react with alkali metal bases such as sodium hydroxide to form water-soluble carboxylic salts.’
    • ‘In the laboratory benzene can be made by the action of heat on a mixture of sodium benzoate and sodium hydroxide.’
    • ‘The contractor realized that the acid caused the problem and tried to neutralize it with an alkaline liquid solution of sodium hydroxide.’
    • ‘In a very alkaline environment such as is provided by sodium hydroxide, paraphenylene diamine becomes a powerful, rapid developer.’
    • ‘Primary alkaline batteries use sodium hydroxide or potassium hydroxide as the electrolyte.’
    • ‘Hydrochloric acid reacts with sodium hydroxide to produce salt and water.’
    • ‘Currently, sodium hydroxide is used to break down starch and protein particles and extract, them from the bran.’
    • ‘In the laboratory the normal method of methane preparation is to combine one part sodium acetate and two parts sodium hydroxide.’
    • ‘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.’
    • ‘Solid sodium hydroxide is obtained by evaporating the water.’
    • ‘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.’
    • ‘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.’


sodium hydroxide

/ˈˌsōdēəm hīˈdräkˌsīd/