442 SULPHUR COMPOUNDS 



Therapeutics. Some reputation in chronic suppurations as 

 boils, fistulse, etc. The impure salt is the basis of the lime sulphur 

 dip for mange. 



POTASSII SULPHUBATA 



Synonyms. Sulphurated Potash, Liver of Sulphur, Sulphide 



of Potash 



Properties. Irregular pieces, liver brown when freshly made, 

 changing to greenish brown, greenish yellow and finally to gray, 

 strong odor of hydrogen sulphide and a bitter acrid alkaline taste; 

 soluble in water, insoluble in alcohol. 



Therapeutics. Almost entirely as a bath for mange. It may 

 be used on horses in strength of 1 to 30, dogs H as strong, 1 to 100. 



SULPHITES 

 SODII SULPHIS EXSICCATUS — DRIED SODIUM SULPHITE 



Dried sodium sulphite occurs as a white powder, odorless and 

 having a cooling saline and sulphurous taste, efflorescent in air; sol- 

 uble in 3.2 parts of water, slightly soluble in alcohol. 



Doses. H. and C. §ss — j ; 15.— 30. D. gr. iij — xv; 0.2 — 1. 



SODII BISULPHIS — SODIUM BISULPHITE 



Sodium bisulphite occurs as opaque prismatic crystals or a 

 granular powder, exhaling an odor of sulphur dioxide and having a 

 disagreeable sulphurous taste. When exposed to the air, it loses 

 sulphur dioxide and is gradually oxidized into the sulphate. It is 

 soluble in 4 parts of water and 72 of alcohol. 



Doses. The same as for the sulphite. 



SODII THIOSULPHAS — SODIUM THIOSULPHATE — 

 HYPOSULPHITE 



Sodium hyposulphite occurs as. a white crystalline powder or as 

 white transparent crystals, odorless, and of a cooling, somewhat bit- 

 ter taste. It is freely soluble in water, insoluble in alcohol. 



Doses. Same as the bisulphite. 



Action and Uses. Externally, these preparations are deodor- 

 izers, antiseptics and antiparasiticides. The hyposulphite is most 

 used. These preparations are used externally in the treatment of 

 parasitic skin disease. They may be applied in ten per cent, solu- 

 tion for mange and ringworm. Sodium thiosulphate is used to re- 

 move iodine and silver nitrate stains. There are no indications for 

 the use of these drugs internally. 



