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The Chemistry of Powder and Explosives - Sciencemadness Dot Org

The Chemistry of Powder and Explosives - Sciencemadness Dot Org

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256 NITRIC ESTERS<br />

Material soluble in ether-alcohol, C 30.50%; H 2.91%; N 11.85%;<br />

Material insoluble in ether-alcohol, C 24.15%; H 2.46%; N 13.83%.<br />

He concluded that the different analytical results which had been<br />

procured with different samples <strong>of</strong> guncotton resulted from the<br />

samples containing different amounts <strong>of</strong> the ether-alcohol soluble<br />

material, <strong>and</strong> judged that completely nitrated guncotton is the<br />

trinitrate <strong>of</strong> cellulose, fC6H7O2(ONO2):s]n, as had been first suggested<br />

by Crum, This substance contains theoretically 14.14%<br />

nitrogen.<br />

1868. E. A. Brown, assistant to Abel, discovered 91 that dry<br />

Gompressed guncotton could be made to detonate very violently<br />

by the explosion <strong>of</strong> a fulminate detonator such as Nobel had<br />

already used for exploding nitroglycerin. Shortly afterwards he<br />

made the further important discovery that wet guncotton could<br />

be exploded by the explosion <strong>of</strong> a small quantity <strong>of</strong> dry guncotton<br />

(the principle <strong>of</strong> the booster). This made it possible to<br />

use large blocks <strong>of</strong> wet guncotton in naval mines with comparative<br />

safety.<br />

Nitrocellulose (NC)<br />

Cellulose occurs everywhere in the vegetable kingdom; it is<br />

wood fiber <strong>and</strong> cell wall, the structural material <strong>of</strong> all plants.<br />

Cotton fiber is practically pure cellulose, but cellulose <strong>of</strong> equal<br />

purity, satisfactory in all respects for the manufacture <strong>of</strong> explosives<br />

<strong>and</strong> smokeless powder, may be produced from wood. Cellulose<br />

<strong>and</strong> starch both yield glucose on hydrolysis, <strong>and</strong> the molecules<br />

<strong>of</strong> both these substances are made up <strong>of</strong> anhydroglucose<br />

units linked together.<br />

»iBrit. Pat. 3115 (1868).

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