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The main chemical used to make 'hypo' solutions used in photographic processing. See [[sodium thiosulfate]].

White, translucent, odorless crystals. Sodium hyposulfite, or hypo, is primarily used as a fixing agent in photographic developing baths to di hypo; sodium hyposulfite; disodium thiosulfate; hyposulfite of soda; sodium subs

...] and de-[[size|size]] textiles. It is used in photographic solution as a hypo eliminator to remove [[sodium%20thiosulfate|sodium thiosulfate]] from the p

...all, as a bleach. Potassium permanganate is used to tan leathers and as a hypo eliminator in photographic processing solutions.

...used as a reducing agent in photographic fixers and as a replacement for 'hypo' ([[sodium%20thiosulfate|sodium thiosulfate]]). It is also used for bleachi