Question

What is the reason for the use of sodium thiosulphate in photography?

Answer 1

Sodium thiosulfate (sodium hyposulfite), Na2S2O3, is used by photographers to fix developed negatives and prints; it acts by dissolving the part of the silver salts coated onto film which remain unchanged by exposure to light.

Answer 2

Sodium thiosulfate, Na2S203 is used by photographer to fix developed negatives and prints, it acts by dissolving the part of the silver salts coated onto film which remain unchanged by exposure to light

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