hyposulfite
hyposulphite

After the exposure, it was washed in a bath of hyposulfite of soda and dried.

The word hyposulfite is also a synonym for the thiosulfate ion, SO.

Hyposulfite, SO, was reported as a sulfur oxyanion.

The first British version was the Hypo helmet, the fabric of which was soaked in sodium hyposulfite (commonly known as "hypo").

In early 1839 he acquired a key improvement, an effective fixer, from John Herschel, the astronomer, who had previously shown that hyposulfite of soda (commonly called "hypo" and now known formally as sodium thiosulfate) would dissolve silver salts.

Fixer is sometimes called hypo, a deprecated term originating from casually shortened form of the alchemist's name hyposulphite.

Later, a solution of the more effective "hypo" (hyposulphite of soda, now known as sodium thiosulfate) was used instead.

Don't prostrate yourself in gratitude, old bean; nothin' Bunter loves like messin' round with pyro and hyposulphite.

In 1839, John Herschel pointed out his earlier discovery that hyposulphite of soda (now known as sodium thiosulfate but still nicknamed "hypo") dissolved silver halides.

About 1868 he was one of the patentees of a machine for making sugar cubes, and in 1882 he patented one for making hyposulphite of soda.

'On the Solvent Power exercised by Hyposulphite of Soda on many Salts insoluble in Water' ('Journ.

At the same time I try to combat the morbid action by using antiseptic agents such as sulphur, hyposulphite of soda creosote or camphor at the seat of the disease.that's to say, in the alimentary canal."

He is implicated in the support of a patent for the use of hyposulphite of soda to fix daguerreotype images, despite clear indications that he was aware of prior art demonstrated and published by Sir John Herschel.

In this application to photographic processing, discovered by John Herschel and used for both film and photographic paper processing, the sodium thiosulfate is known as a photographic fixer, and is often referred to as hypo, from the original chemical name, hyposulphite of soda.

He discovered sodium thiosulfate to be a solvent of silver halides in 1819, and informed Talbot and Daguerre of his discovery that this "hyposulphite of soda" ("hypo") could be used as a photographic fixer, to "fix" pictures and make them permanent, after experimentally applying it thus in early 1839.