Search results
Results From The WOW.Com Content Network
Phenylhydrazine was the first hydrazine derivative characterized, reported by Hermann Emil Fischer in 1875. [7] [8] He prepared it by reduction of a phenyl diazonium salt using sulfite salts. Fischer used phenylhydrazine to characterize sugars via formation of hydrazones known as osazones with the sugar aldehyde. He also demonstrated in this ...
Phenylhydrazine and 2,4-dinitrophenylhydrazine had been used historically in analytical chemistry to detect and identify compounds with carbonyl groups. Phenylhydrazine was used to study the structure of carbohydrates, because the reaction of the sugar's aldehyde groups lead to well crystallizing phenylhydrazones or osazones.
Pigment Yellow 97, a popular yellow colorant, is a hydrazone. [6]Hydrazones are the basis for various analyses of ketones and aldehydes. For example, dinitrophenylhydrazine coated onto a silica sorbent is the basis of an adsorption cartridge.
This list may not reflect recent changes. ... Phenylhydrazine; Phenyllithium; Phenylmagnesium bromide; Phenylmercuric borate (previous page)
العربية; বাংলা; Български; Català; Čeština; Dansk; Deutsch; Ελληνικά; Español; Esperanto; Euskara; فارسی; Français; 한국어
This gel can come in handy during cold and flu season and in extremely germy situations like hospitals, medical clinics, and doctors offices. And while dermatologists recommend you don’t overuse ...
This page was last edited on 21 December 2006, at 21:22 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Hydrazine is an inorganic compound with the chemical formula N 2 H 4.It is a simple pnictogen hydride, and is a colourless flammable liquid with an ammonia-like odour.Hydrazine is highly hazardous unless handled in solution as, for example, hydrazine hydrate (N 2 H 4 ·xH 2 O).