Pyro-collodion

When tested, it gave satisfactory results in guns ranging from the one-pounder to the 6" gun. The reason why it was not adopted by ordnance, was that at a slightly later date Lt Bernadou introduced in USA pyro powder, which was the same as Mendeleev s pyro-collodion powder, but with slightly higher nitrogen content Refs 1) C. E. Monroe, JACS, 18, 817-46 (1896) 2) Davis (1943), 296... 

Pyro-Collodion.—The terms pyro-collodion and collodion cotton are used to designate lower nitrates of cellulose containing about 12.6 per cent, nitrogen, more or less soluble in alcohol-ether and used in the manufacture of smokeless powders. 

N. See Collodion Cotton or Pyroxylin and Pyrocellulose, Pyro or Pyrocotton in Vol 2. 

Volpert. Patented in Ger in 1896, a mining expl contg K nitrate 40, NG 30, Mg sulfate cryst 24, turpentine 4, collodion cotton 1 and soda ash 1 p. Volpert also patented in 1897 in both Belg and Engl, AN based mining expls with the following typical formulation AN 82.5, K pyro-sulfate 7.5, naphthalene 5.0 and K ferrocyanide 5.0 p... 

Pirokollodion (Pyrocollodion). A single-base proplnt contg NC of 12.45% N invented by D.I. Mendeleev in 1891. This proplnt served as a prototype for the Pyrocellulose single-base proplnt introduced in the US in 1895 by Ber-nadou and adopted by the Navy. Pyrocellulose, or simply Pyro is based on NC of about 12.6% N. See Collodion Cotton or Pyroxylin and Pyrocellulose, Pyro or Pyrocotton in Vol 2, C103-R to C106-L... 

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