Schweizer's reagent

Schweizer's reagent

Schweizer's reagent is the common name for the complex tetra-aminecopper dihydroxide, [Cu(NH3)4] [OH] 2. It is prepared by precipitating copper(II) hydroxide from an aqueous solution of copper sulfate using sodium hydroxide, then dissolving the precipitate in a solution of ammonium hydroxide. It forms a deep azure solution. If the solution is evaporated, it leaves blue, needle-like crystals.

Schweizer's reagent finds use in production of cellulose products such as rayon and cellophane, because wood-pulp, cotton fiber, and other natural cellulose sources are soluble in the solution. Dissolved cellulose precipitates when the solution is acidified.

References

*cite journal
author = Walther Burchard, Norbert Habermann, Peter Klüfers, Bernd Seger, Ulf Wilhelm
title = Cellulose in Schweizer's Reagent: A Stable, Polymeric Metal Complex with High Chain Stiffness
journal = Angewandte Chemie International Edition in English
year = 1994
volume = 33
issue = 8
pages = 884–887
doi = 10.1002/anie.199408841
*cite journal
author =Eduard Schweizer
title = Das Kupferoxyd-Ammoniak, ein Auflösungsmittel für die Pflanzenfaser
journal = J Prakt. Chem.
year = 1857
volume = 72
issue = 1
pages = 109–111
doi = 10.1002/prac.18570720115


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • schweizer's reagent — …   Useful english dictionary

  • Schweizer's reagent — noun see cuprammonium solution …   Useful english dictionary

  • Schweizer reagent — Šveicerio reagentas statusas T sritis chemija apibrėžtis Apibrėžtį žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. Schweizer reagent rus. реактив Швейцера …   Chemijos terminų aiškinamasis žodynas

  • schweitzer's reagent — noun see schweizer s reagent …   Useful english dictionary

  • List of named inorganic compounds — Well known inorganic and organometallic compounds and reagents that are named after individuals include Adams catalyst (proposed to be PtOx) Adamsite (NH(C6H4)2AsCl) Adkins catalyst (Cu2Cr2O5) Attenburrow s Oxide (MnO2) Arduengo carbene (class of …   Wikipedia

  • Metal ammine complex — Ball and stick model of the tetraamminediaquacopper(II) cation, [Cu(NH3)4(H2O)2]2+ In coordination chemistry, metal ammine complexes are metal complexes containing at least one ammonia (NH3) ligand. Ammine is spelled this way due to historical… …   Wikipedia

  • Copper — For other uses, see Copper (disambiguation) …   Wikipedia

  • Copper(II) hydroxide — Copper(II) hydroxide …   Wikipedia

  • cuprammonium solution — noun : a deep blue solution of cupric hydroxide or cupric oxide in aqueous ammonia used as a solvent for cellulose (as in making cuprammonium rayon) called also Schweizer s reagent * * * cuprammonium solution, 1. a solution of copper and ammonia …   Useful english dictionary

  • Реактив Швейцера — водный раствор гидроксида тетрааммиаката меди [Cu(NH3)4](OH)2, назван в честь Эдуарда Швейцера, обнаружившего способность этого реактива растворять целлюлозу[1]. Реактив Швейцера получают растворением свежеосажденного гидроксида меди в водном… …   Википедия

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”