Definition of sodium thiosulphate in English:

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sodium thiosulphate

Pronunciation: /ˌsōdēəm ˌTHīōˈsəlfāt/


A white soluble compound used in photography as a fixer to dissolve unchanged silver halides. Also called hypo1.
  • Chemical formula: Na2S2O3.
Example sentences
  • Excess silver is removed by sodium thiosulfate.
  • One fixative used commonly is sodium thiosulfate.
  • The process involves adding a 10% solution of sodium thiosulfate to the second developer.

For editors and proofreaders

Syllabification: so·di·um thi·o·sul·phate

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