Sulfur (Sulfur, S) is a chemical element of group VI periodic system of elements of D. I. Mendeleev; serial number 16, atomic weight (mass) 32,064; valence -2, +4, +6. Sulfur nerastvorim in water, soluble in organic solvents. Burns with formation of sulfur dioxide (sulphur dioxide, SO2) - a colorless gas with a pungent smell, used for disinfection and disinsection. When dissolved in water S02 form sulfurous acid-H2SO3, which reacts with sulphur gives Miserlou (carnavalito) acid-H2S2O3. When heated in the presence of catalysts sulfur dioxide is oxidized to form sulfuric anhydride (SO3), when dissolved forms sulfuric acid (see). With hydrogen sulfur forms hydrogen (H2S) - a colorless, poisonous gas with an odor of rotten eggs (see the hydrogen Sulphide). Sulphur compounds are included in the cells of plants and animals.
At interaction of sulfur with organic substances of the body are formed sulfides and pantotenova acid, the presence of which depends keratolytic, antimicrobial and antiparasitic properties of sulfur. Sulfur is a part of sulphuric ointment, an ointment Wilkinson (Unguentum Wilkinsoni: tar liquid 15 parts, calcium carbonate 10, sulphur treated 15 ointment naftalannoy 30, soap green 30, 4 parts water), applied for scabies, fungal and other skin diseases, and liquids Flemings used for the treatment of scabies. In medical practice using purified and precipitated sulphur.
Sulfur purified (Sulfur depuratum). Prescribed for enterobiasis, as a laxative (0,5 - 1 g per reception)for pyrogenic therapy in schizophrenia, progressive paralysis and other (1% solution in persikovom oil), psoriasis, seborrhea, scabies and other (outer 5, 10 and 20% ointments and powders).
Sulphur deposited (Sulfur praecipitatum), or sulfur milk - tiny pale yellow powder, insoluble in water. Appointed in the same cases and doses as purified sulfur. In biology and experimental medicine, is used as an indicator of radioactive sulfur.
Note that because of the high dispersity precipitated sulphur when taking it inside can occur rapid and abundant formation of sulfides in the intestine that can cause poisoning sulfide.