This section is from the "A Handbook of Useful Drugs" book, by State Medical Examining and Licensing Boards.
Sulphur is official in the U. S. Pharmacopeia under three headings:
Properties : Sulphur in any of the foregoing forms should contain from 99 to 99.5 per cent, of pure sulphur. It is a fine yellow powder, the sublimed variety having a slight odor and a faintly acid taste. The other varieties are without odor or taste and all are practically insoluble in water or in alcohol.
Action and Uses: Sulphur becomes active in the intestines and on the skin by a partial conversion into hydrogen sulphid or other sulphids. These products are slightly antiseptic and are irritant, so that sulphur becomes a mild purgative.
Sulphur is used externally as a parasiticide in cases of scabies. It is used to produce sulphur dioxid for room disinfection by burning it in the proportion of 3 pounds of sulphur to each thousand cubic feet of air space. All surfaces and articles to be disinfected should be wet.
Dosage: Each form, 4 gm. or 60 grains.