The Secretary of State for Defence in Her Britannic Majesty's Government

Other

David Anthony Salter

Greville E Bagg

Andrew J Sanderson

Norman Frederick Scilly

Keith Ellis Watson

Robert John Simkins

Method of separating electrochemically produced dinitrogen pentoxide

In a process for the production of the explosive material 2,2',4,4',6,6'-hexanitrostilbene in which 2,4,6-trinitrotoluene is reacted with an alkali or alkaline earth metal hypochlorite in a solution to precipitate the product, the yield is improved by adding to the mixture, subsequent to commencement of the reaction, a nitrogeneous base. The nitrogeneous base is particularly one having a pKa of 9.25 to 11.25 and an organic amine is especially preferred. The base is added at least 0.5 minute after starting the reaction, and the mixture is stood thereafter for a period which is preferably about 2 hours.

Production of hexanitrostilbene

A process for the preparation of nitrophenols by adding over a period of time a suspension containing from about 4 to about 20 per cent weight/volume of nitrosated phenol to a nitric acid solution containing between 45 and 100 per cent by weight of nitric acid, said solution being maintained at a temperature in the range from about 45.degree. to 100.degree.C.

Preparation of nitrophenols

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Sawbridgeworth, United Kingdom

David Anthony Salter