Basic Lead Picrate

Pb azide, Pb nitrophenols, Pb triethanol-ammonium perchlorate and PETN or RDX, with a sheath spun from filaments of a thermo plastic material or a ductile metal such as bronze) Ad 159) J.F. Kenney, USP 3293091(1966) CA 67, 7089(1967) [Primary expl mixts contg 46% of complex clathrate inclusion salts (as shown by X-ray diffraction data) of basic lead picrate, such as Pb(C5H2N3O7)2-Pb(OH)2-Pb(N03)2.-Pb(OAc)2, 50% Ba nitrate 4% Tetracene]... 

Double Salts of Basic Lead Picrate Wi th Other Organic Lead Salts. USP 3262956 of July 26, 1966 of J.F. Kenney (to Remington Arms Co, Inc) is described in CA 65, 13450 (1966) as follows ... 

Double salts of basic lead picrate with other organic lead salts 5 D1541— D1542... 

Basic lead picrate is prepared by reaction of picric acid with yellow lead oxide in water. The mixture is stirred and boiled during the reaction. Product forms as a precipitate [11]. Basic lead picrate has similar explosive properties to those of LS and was therefore used in similar applications (e.g., as a component of percussion mixtures) [10-12]. Due to its lower flammability, it was, however, replaced in practical use by LS [12]. 

In 1962 Kenney applied for patents on many complex, basic lead pic-rate-clathrate inclusion compounds which did not have the static electricity hazard of lead styphnate. Of 44 compounds listed in his patent, monobasic lead picrate-lead nitrate-lead acetate was preferred for primers, although monobasic lead picrate-lead nitrate-lead hypophosphite dibasic lead pic-rate-lead nitrate-lead acetate and monobasic lead picrate-lead nitrate-lead acetate-lead hypophosphite were also suitable. Glass was thought to damage the bore of the firearm and was considered by some to be undesirable. A glassless rimfire mixture was ... 

Lead Picrate. 2,4,6-Trinitro-lead-phenolate basic... 

Lead picrate forms several basic salts with varying lead content. They form citric yellow crystals practically insoluble in water or alcohol. Its explosive properties are similar to those of lead styphnate but its flammability is lower [10]. Sensitivity to electrostatic discharge is high (at the level of LS) and is the reason for the many accidents which occurred during its manufacture [12]. Sensitivity to impact is 2.5 J (it explodes by 5 kg hammer from 5 cm) [13]. 

---