Gun cotton


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(Chem.) a general name for a series of explosive nitric ethers of cellulose, obtained by steeping cotton in nitric and sulphuric acids. Although there are formed substances containing nitric acid radicals, yet the results exactly resemble ordinary cotton in appearance. It burns without ash, with explosion if confined, but quietly and harmlessly if free and open, and in small quantity. Specifically, the lower nitrates of cellulose which are insoluble in ether and alcohol in distinction from the highest (pyroxylin) which is soluble. See Pyroxylin, and cf. Xyloidin. The gun cottons are used for blasting and somewhat in gunnery: for making celluloid when compounded with camphor; and the soluble variety (pyroxylin) for making collodion. See Celluloid, and Collodion. Gun cotton is frequenty but improperly called nitrocellulose. It is not a nitro compound, but an ester of nitric acid.

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References in periodicals archive ?
Tenders are invited for Procurement of Rectifier Gun Cotton T.
He perfected the process of using gun cotton - a material used on wounded soldiers - and ether to adhere the silver nitrate to the plate.
In the first two waves, two engineers armed with mobile charges and gun cotton for destroying dugouts, accompanied each platoon.