Hydrogen Cyanide (Anhydrous) by Wöhler's Method

Anhydrous hydrogen cyanide (prussic acid) is a clear liquid and a deadly poison. Crawford's 1936 patent turns it into acetone cyanohydrin, the start of acrylic glass. This is Wöhler's laboratory method as the 1907 US Dispensatory gives it: fuse potassium ferrocyanide to a black cyanide, set the acid free with diluted sulphuric acid, dry the vapour over calcium chloride and distil it into an ice-cold bottle. The source gives no strength for the acid: none is given here. The picture: pure liquid hydrogen cyanide in a glass ampoule (Pok, Wikimedia Commons, CC BY-SA 4.0).

Advanced

1 day

Hazardous content

This blueprint contains hazardous procedures. Log in and enable hazardous content in your account settings to view the step-by-step instructions.

This blueprint makes

Placeholder

Hydrogen Cyanide

Free

Related Blueprints

These blueprints share knowledge with this one — techniques, materials, or principles that connect them in the learning graph.

Hazardous

Prussiate of Potash: Horn Char Calcined with Potash and Iron (Ure, 1839)

by Charlie

Inorganic

Cream of Tartar from Wine Lees

by TheChef

Food

CC0 Public Domain

This blueprint is released under CC0. You are free to copy, modify, distribute, and use this work for any purpose, without asking permission.

Support the Maker by purchasing products through their Blueprint where they earn a Maker Commission set by Vendors, or create a new iteration of this Blueprint and include it as a connection in your own Blueprint to share revenue.

Discussion

(0)

Loading comments...