sodium thiosulfate

American  

noun

Chemistry.

1. a white, crystalline, water-soluble powder, Na 2 S 2 O 3 ⋅5H 2 O, used as a bleach and in photography as a fixing agent.

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Etymology

Origin of sodium thiosulfate

First recorded in 1880–85

Example Sentences

Mr. Marte, the paramedic, and his partner, Cullen McGraw, administered hydroxocobalamin and sodium thiosulfate, treatments to reverse the effects of cyanide, the poisonous chemical compound found in smoke.

From New York Times • Jan. 16, 2022

When the royal couple wrote their names with the celebrated ink, the signatures became brown when developed and chemists fixed the paper with a solution of sodium thiosulfate so the writing would not fade.

From Scientific American • Apr. 5, 2014

Dilute with 100 cc. of water, and allow the N/10 sodium thiosulfate to flow slowly into the flask until the yellow color of the liquid has almost disappeared.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by Thomssen, E. G.

Add a few drops of the starch paste, and with constant shaking continue to add the N/10 sodium thiosulfate solution until the blue color just disappears.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by Thomssen, E. G.

Titrate the iodine with N/10 sodium thiosulfate solution which is added gradually, with constant shaking, until the yellow color of the solution has almost disappeared.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by Thomssen, E. G.