nitrocellulose

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pyroxylin

 [pi-rok´sĭ-lin]
a product of the action of a mixture of nitric and sulfuric acids on cotton; used to make collodion.

py·rox·y·lin

(pi-rok'si-lin),
Consists chiefly of cellulose tetranitrate, obtained by the action of nitric and sulfuric acids on cotton; used in the preparation of collodion.
[pyro- + G. xylon, wood]
References in periodicals archive ?
Muriel (nee Wardrobe) continued to work at the mill during the war, packing gun cotton.
Mr Bemis who bought the rights to the wreck in 1967 believes there was a cover-up by the British government about the military cargo, including mustard gas and gun cotton.
Storing, packing, pressing, cleaning, preparing or manufacturing by and process whatever blasting power, ammunition fire-works, gun powder, sulphur, mercury, gases, gun cotton, saltpeter, nitrocompounds, nitromixtures, phosphorous or dynamite.