SULPHUR 239 



Derivation. — Obtained from sublimed sulphur which is treated 

 with diluted ammonia water to wash out sulphurous and sulphuric 

 and other impurities. 



Properties. — A fine, yellow powder, without odor or taste. Solu- 

 bility, same as sublimed sulphur. 



Pulvis Olycyrrhizce Compositus, Compound Powder of Glycyrrhiza. 



(U. S. P.) 



Senna, 180; glycyrrhiza, 236; washed sulphur, 80; oil of fennel, 4; 

 sugar, 500. 



Dose. — Dogs (laxative), 3 ss.-i. (2.-4.). 



Unguentum Sulphuris. Sulphur Ointment. (U. S. P.) 

 Washed sulphur, 300; benzoinated lard, 700. 



Unguentuvi Sulphuris. (B. P.) (Half strength of U. S. P.) 



Sulphur Prcecipitatum. Precipitated Sulphur. S. (U. S. & B. P.) 



Synonym. — Lao (magisterium) sulphuris, milk of sulphur, E.; 

 soufre precipite, lait de soufre, Fr.; Schwofelmilch, G. 



Derivation. — Obtained from a solution of sublimed sulphur, 100; 

 in boiling calcium hydrate, GO; by precipation with hydrochloric acid'. 

 Calcium sulphide and hyposulphite are formed. 12 S + 3 Ca O2H2 = 



2 Ca S5 + Ca S, O3 + 3 HaO. Then: 2 CaSs + Ca S, O3 + 6 H CI = 



3 Ca Cla -f- 12 S -f- 3 H3O. 



Dose (of sublimed, washed or precipitated sulphur). — 

 H. & C, § ii.-iv. (60.-120.); Sh. & Sw., 5 i.-ii. (30.-60.); D., 

 3 s8.-iv. (2.-15.). 



Larger doses laxative ; smaller for constitutional action. 



Precipitated sulphur is the best preparation for inter- 

 nal use, as it occurs in a finer state of division and is more 

 readily acted upon by the digestive juices. It may contain 

 traces of sulphides or sulphuretted hydrogen, owing to the 

 method of preparation. 



Action External. — Sulphur has no action upon the skin 

 when applied in the pure state. The ointment is the most 

 effective agent in destoying acari which produce mange, 

 grease, and scab. Sulphur does not kill acari as readily as 

 a sulphide which is formed by the addition of an alkalL 



