MILD MERCUROUS CHLORIDE 195 



Hydrargyri Chloridum Mite. Mild Mercurous Chloride. 



Hg,Cl, (U.S. P.) 



( CaloTnelj Mild Chloride of Mercury.) 



Synonym. — Hydrargyri subchloridura, B. P.; hydrargy- 

 rum chloratum mite, P. G.; hydrargyri chloridum, hydrar- 

 gyrum chloratum (muriaticum) dulce, mercurius dulcis, 

 calomelas chloruretum (chloretum) hydrargyrosum, sub- 

 chloride (protochloride) of mercury, E.; protochlorure (sous- 

 muriate) de mercure, calomele, Fr.; quecksilberchloriir, 

 calomel, G. 



Derivation. — Heat mercurous sulphate and sodium 

 chloride. Calomel sublimes. Hgj SO^ + 2 Na CI = Hg^ 

 €1, + Na, SO,. 



Properties. — A white, impalpable powder; odorless and 

 tasteless ; permanent in the air ; insoluble in water or 

 alcohol. When strongly heated it is wholly volatilized 

 without melting. 



Dose.—B^., 3ss.-i. (2.-4); C, 3 v.-vi. (20.-24); D., gr.ss. 

 (.03), in divided doses; D., gr.iii.-v. (.2-.3) in single doses. 



PREPARATION. 



Pilulace Catharticce Compositce. Compound Cathartic Pills. (U. S. P.) 



Compound extract of colocynth, 80; calomel, 60; extract of jalap, 

 30; gamboge, 15; water to make 1,000. 

 Dose.— D., pill 1 to 3. 



Hydrargyri Iodidum Rubrum. Red Mercuric Iodide. Hgl,. 



(U. S. & B. P.) 



(Binodide of Mercury, Bed Iodide of Mercury.) 



Synonym. — Hydrargyrum biiodatum rubrum, P. G.; 

 deutoioduretum (biniodidum) hydrargyri, mercurius iodatus 

 ruber, iduretum hydrargyricum, E.; deut-iodure (bi-iodure) 

 de mercure, iodure mercurique, Fr.; rothes jodquecksilber, 

 quecksilberjodid, G. 



Derivation. — Mix aqueous solutions of corrosive mercuric 

 chloride, 40gm., and potassium iodide, 50gm. The red 



