Nitroglycerine powders with a volatile solvent

NITROGLYCERINE POWDERS WITH A VOLATILE SOLVENT Cordite Mk I and Cordite MD 

British cordite is a typical powder of this kind. There are two types the obsolete Mark I and the more modem modified cordite MD. They differ in composition (Table 183). 

Cordite MD is an improved powder. It contains less nitroglycerine than Mk I and is, therefore, less erosive. Cordite owes it name to the fact that it is made of cords, the size (diameter) of which is denoted by a figure giving the diameter of the die in hundredths of an inch. Thus, for instance, Cordite 50 denotes a powder in the form of a cord extruded from a die of in. (50/100 in.) dia. 

Cordite MD is manufactured by a method very similar to that used for the manufacture of nitrocellulose powder. 

The cordite paste so obtained is next loaded into Werner-Pfleiderer kneaders where it is incorporated with vaseline and acetone. The quantity of acetone in relation to the nitrocellulose is 50-60%. Kneading lasts for 2.5-3.5 hr. 

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See also in sourсe #XX -- [ ]

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