Lead hypophosphite nitrate

The use of alternative oxidizers led to mixtures that were not corrosive but contained MF, which liberated toxic mercury vapors during firing. To overcome the problem of toxicity, Edmund von Herz proposed replacing MF in priming compositions with lead hypophosphite nitrate (1913) and later by the lead salt of trinitroresorcine (1914). The more important of these two MF substitutes was the... 

Explosive limits No data Explosive with easily oxidizable substances, and lead nitrate-lead hypophosphite double salt 2-3 drops 90% peroxyformic acid causes violent explosion No data... 

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 ... 

SAFETY PROFILE Poison by intravenous and intraperitoneal routes. Moderately toxic by ingestion. Experimental teratogenic and reproductive effects. Questionable carcinogen. Probably a severe eye, skin, and mucous membrane irritant. Mutation data reported. A powerful oxidizer. Explodes on contact with red-hot carbon, cyclopentadienylsodium (at 100-130°C), potassium acetate + heat. Reacts violently with ammonium thiocyanate, carbon, lead hypophosphite. When heated to decomposition it emits very toxic fumes of Pb and NOx. Used as a mordant, a chemical reagent, and in production of matches and pyrotechnics. See also LEAD COMPOUNDS and NITRATES. 

When wet with water a reaction occurs between the calcium hypophosphite and the lead nitrate, producing a shock-sensitive nonhygroscopic compound which incorporates both oxidizer and fuel. 

Phosphites may be distinguished from hypophosphites by several tests. The ions of barium and lead give white precipitates with solutions of phosphites. Silver nitrate gives a white precipitate in the cold, from which black metallic silver is quickly deposited on warming —... 

Fig. 28. Determination of interfering nitrates in a nickel-plating bath. Leading (L) and terminating (T) anions chloride and glutamate, resp. Other components of the bath, namely hypophosphite (hypo P-ite), phosphite, (P-ite), phosphate (P-ate), and lactate (Lac) are also separated...

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