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pyrocellulose
pyrocellulose n. 
/ˌpʌɪrə(ʊ)ˈsɛljᵿləʊz/, /ˌpaɪroʊˈsɛljəˌloʊz/ a form of nitrocellulose with a relatively low nitrogen content, used in explosives; cf. gun-cotton n.
Brit. /ˌpʌɪrə(ʊ)ˈsɛljᵿləʊs/
, /ˌpʌɪrə(ʊ)ˈsɛljᵿləʊs//ˌpʌɪrə(ʊ)ˈsɛljᵿləʊz/U.S. /ˌpaɪroʊˈsɛljəˌloʊs/
, /ˌpaɪroʊˈsɛljəˌloʊs//ˌpaɪroʊˈsɛljəˌloʊz/ΘΚΠ
the world > matter > chemistry > chemical substances > named compounds > [noun] > nitro-compounds
nitric ether1796
nitro-compound1852
nitro-substitute1852
nitro-acid1857
nitro-substitution1863
nitrocellulose1868
pyrocellulose1901
1901 J. Bernadou tr. D. Mendeléef in J. Bernadou Smokeless Powder (App. 2) 99 Besides chemical homogeneity, pyrocellulose and the powders prepared therefrom possess a second distinguishing quality, viz., that for a given weight of their substance they develop a maximum volume of evolved gases.
1920 O. W. Willcox in A. Rogers Industr. Chem. (ed. 3) xlvi. 1076 Nitrocellulose of from 12·50 to 12·70 per cent of nitrogen is called pyrocellulose, or simply pyro, and is the material from which smokeless powder for cannon is made.
1951 R. E. Kirk & D. F. Othmer Encycl. Chem. Technol. VI. 36 Various types or grades of nitrocellulose are characterized by their nitrogen contents..: pyroxylin, 8–12% nitrogen; pyrocellulose, 12·6 ± 0·1% nitrogen; guncotton, 13·3 ± 0·1% nitrogen.
1989 Encycl. Brit. XXI. 280/1 It was..the most important type of smokeless powder used by the Allies in World War I. It was made from a nitrocotton of relatively low nitrogen content, called pyrocellulose.
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