sodium thiosulfate

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.

Word History and Origins

Origin of sodium thiosulfate¹

First recorded in 1880–85

Example Sentences

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

Doctors and nurses were instructed to filter the drug, sodium thiosulfate, before administering it to patients.

From New York Times

A doctor prescribed weekly infusions of a drug, sodium thiosulfate, Ms. Benge said, thinking it might bind to the calcium so her body could flush it out.

From New York Times

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 Project Gutenberg

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 Project Gutenberg