Activation Energy 55kcal/mol(Ref 18); Behavior Towards Flame - ignites and burns like NC, even in quantities of several grams(Ref 9); Brisance, by Sand Test - 95 & 99% TNT(Ref 25) & 200%MF (Ref 10); Brisance, by Lead Block Compression Test - 71% TNT(Ref 10); Burning Rate 2.15cm/sec at atm, pressure, for sample in the form of compressed cylinders(Ref 12); Compatibility - incompatible with LA(Ref 10); Dead-pressing - not dead pressed at 130000psi(9139kg/cm2)(Refs 9 & 10); Electrostatic Discharge, Sensitivity to -0.012 joules(Ref 25); Explosion Temperature -165°(Ref 17); 195° in 5secs(Ref 25); Friction Sensitivity - about the same as that of LA and less sensitive than MF(Ref 9); Gas Volume, 865 l/kg(Ref 25); Heat of Combustion 2243cal/g(Ref 25); Heat of Explosion, 172.2kcal/mol(Ref 10); 820cal/g(Ref 25); Heat Test, 100°,% Loss:2.10 in lst48hrs, 2.20 in 2nd 48hrs; no expln in 100hrs(Ref 25); Hygroscopicity, 0.04% at 30° & 90%RH(Ref 25);
Impact Sensitivity- less sensitive than MF & LA (Ref 9); FI 18% PA(Ref 10); 4-7" vs 2-4" for MF by PicArsn App with 1 lb wt using 15mg samples (Ref 25); Power by Trauzl Test, 97% PA or 110% TNT(Ref 10); Rate of Detonation, 4400m/sec at d 0.9, 6600 at d 1.5 and 6900 at d 1.6(Ref 25); Sensitivity as an Initiator,mm amt of DADNPh required to initiate 0.5g of the following HE's: Tetryl 0.075g, HNDPhA 0.075, PA 0.115 and TNT 0.163. All expls were pressed at 3400psi (Ref 5); Shock Sensitivity - initiated by shock at Mach 5.5-6.3(Ref 22); Stability - no loss in power after 5mos wet storage; stable to diffused light and to storage at 60°; darkens in direct light (Ref 5); effect of gamma radiation on DADNPh was studied by Rosenwasser(Ref 23) (See also Heat Test, 100° and Vacuum Stability, 100°); Time Lag Before Initiation by DADNPh is discussed in Ref 20; Vacuum Stability, 100°,7.6cc/5g/40hrs(Ref 25); and Volatility - unaffected in 30 months at 50°
Uses. DADNPh is a HE suitable for use as an initiating expl. Its props & suitability as an expl have been studied extensively by Clark(Ref 5), Grant & TiffanyiRef 11) and reviewed by Fiche-roulle & Kovacjhe(Ref 16). Rolland(Ref 14) proposed a compd detonator with PETN as a base chge with a superimposed initiating chge consisting of DADNPh 75 and expl org nitrate(nitroman-nite, nitrodulcite or nitrostarch) 25%. Schuricht (Ref 19) proposed an ammunition priming composition as follows: Complex salt(LSt, basic LSt or lead hypophosphite) 48.5, Tetracene 5-0, DADNPh 7.0, Pb nitrate 19.0, ground glass 19.0, gum arabic 1.0 & Aerogel 0.5%. Tsukii & Kichu-chi(Ref 21) patented an expl compn suitable for riveting and constg of DADNPh 60 & Tetracene 40% or DADNPh 60, Tetracene 20 & RDX(or NGu) 20%, with KC103 or KNOg added as an oxidg agent
Was this article helpful?