162 INORGANIC AGENTS 



liquor plumbici subacetici, P. G.; sous-acetate de plomb liquide, extract 

 de Goulard de vinaigre, plomb, Fr. ; bleiessig, G. 



Composition. — An aqueous liquid, containing in solution about 25 

 per cent, of lead subacetate (approximately), PbaO (CaH30a)2. 



Liquor Plumbi Svhacetatis Dilutus. Diluted Solution of Lead Subacetate. 



(U. S. & B. P.) 

 Synonym. — Lead Water. Lead Subacetate, 3; water to make 100. 



Ceratum Plumbi Subacetatis. Cerate of Lead Subacetate. (U. S. P.) 

 Solution of lead subacetate, 20; camphor cerate, 80. 



Plumbi Carbonas. Lead Carbonate. (PbC08)a Pb(0H)2. 

 (U. S.&B.P.) 



Synonym. — White lead, E.; ceruse, Fr.; bleiweiss, G. 



Derivation. — Expose lead to the action of acetic acid 

 vapor and air with carbonic dioxide. 



4 Pb + 2 HCaH30, + 2 O, + 2 CO, = (PbCo3), Pb 

 (OH)a + Pb(C,H30,),. 



Properties. — A heavy, white, opaque powder, or a pul- 

 verulent mass, without odor or taste. Permanent in air. 

 Insoluble in water or alcohol. Used only externally. 



Plumbi Nitras. Lead Nitrate. Pb (NOg)^. (U. S. & B. P.) 



Synonym. — Salpetersaures bleioxyd, bleisalpeter, G. 



Derivation. — Dissolve lead in nitric acid. 



Properties. — Colorless, transparent, octohedral crystals, 

 or white, nearly opaque crystals ; without odor, and having 

 a sweetish, astringent, and afterwards metallic taste ; 

 permanent in the air ; reaction acid ; soluble in 2 parts of 

 water ; almost insoluble in alcohol. Only used externally 

 in 1 per cent, solution as an astringent and deodorant in 

 gangrenous surfaces, etc. 



Plumbi Iodidum. Lead Iodide. Pb I2. (U. S. & B. P.) 



Derivation — Treat solution of lead nitrate with that of 

 potassium iodide. 



