A white soluble compound used in photography as a fixer to dissolve unchanged silver halides. Also called hypo1.
- Chemical formula: Na2S2O3
- 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.
Definition of sodium thiosulphate in:
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