Sulfur and Its Compounds (1945)

sulfur represented in chemistry by the symbol s is a solid yellow colored minerals one of the few elements found in a pure state in nature it is tasteless and odorless self-worth tremendously important to our daily lives an automobile for example contains about 35 pounds of this vital element not counting that used to manufacture the gasoline in the tank without sulfur the rubber and the tires would be soft and gummy went hot fraud and riddles and clothes huge quantities of sulfur are used in manufacturing virtually every part of the cost the battery is case in rubbers hardened with the aid of sulfur and the fluid inside is sub uric acid sulfur plays a bottle plot not only in automobiles but in nearly everything else we use eat or where man has known a news self earth in ancient times suffer from volcanoes of those Mediterranean region was used by the Greeks in the Romans as a medicine to clean wool and to make torches until the early part of the present century the volcanic I love Sicily produced nearly all the world's supply of sulfur in 1901 Herman fache perfected the method of mining underground deposits found in the southern United States and today Texas and Louisiana reduced ninety nine percent of the sulfur we use every year throughout the large amount for export Derek similar to those used on oil wells mark the location of the shaft leading to deposits of the yellow mineral seven hundred feet or more below the surface under the frost process very hot water and steam superheated to 170 degrees centigrade is forced down to the proper bed this melts the sulfur and the stream of hopkins coming down through another pipe forces a frothy mixture of sulfur hot water and air to the surface the water evaporates and the sulfur solidifies into huge block often weighing more than a million tons it is blasted applause loaded onto straight soil and it shipped to the markets of the world sulfur has a number of interesting properties it melts at a comparatively low temperature about 115 degrees centigrade as it melts it turns to a brown liquid becoming darker as the temperature is increased at one point it reaches a viscous state that quickly turns back to a liquid as it approaches its boiling point of approximately 400 44 degrees centigrade like oxygen sulfur has several electronic form in the laboratory we can prepare the three other topic forms of sulfur rhombic monoclinic-prismatic and a mortgage or practice we can easily see that sulfur is insoluble in water but it dissolves readily in carbon disulfide the fifth solution is allowed to be that crystals of rhombic sulfur will be born these crystals are octahedral for eight sided in shape sulfur in its natural state is in rhombic form but the crystals are much smaller and often broken if we heat selfer to its melting point about 115 degrees centigrade pour it onto a filter paper and allow it to cool needle-like crystals of monoclinic or prismatic sulphur will deform when monoclinic sulfur is cooled below 96 degrees centigrade it slowly returns to rhombic crystals to prepare amorphous or plastic sulfur's it is heated to a boiling point about 444 degrees centigrade and brought into cold water under these conditions sulfur will not crystallize at all but turn into a rubbery plastic state amorphouse sulfur will also go back to rhombic form after a while thus it can be seen that rhombic crystals is the only stable form of sulfur the simplest compound of sulfur may be produced by burning it in air as a result for burns or oxidizes each sulfur atom combines with two atoms of oxygen from the air to form a gas sulfur dioxide so2 sulfur dioxide has a suffocating choking Boulder sulfur dioxide has a number of commercial uses it is used principally as a bleaching agent let's see what happens with it red geranium if sulfur is burned in a furnace sulfur dioxide is born if this gas is mixed with a plentiful supply of air and passed over a catalytic agent such as finely divided platinum each molecule is combined with an atom of oxygen from the air to produce a new compound sulfur trioxide so3 if this compound is dissolved in water hydrogen and oxygen atoms from the water are added to the equation to produce h2so4 which is sulfuric acid the manufacture of sulfuric acid is by far the greatest single use for sulfur actually the process of making sulfuric acid commercially is much more complicated than the diagram we have just seen although the basic principle is the same huge quantities of software required to manufacture the more than 8 million tons of sulfuric acid used in the United States every year power machinery abused it carries a yellow mineral two giant furnaces where the sulfur dioxide is produced after going through a complex system of tanks and coolers they answered emerges in such great quantities that tank cars are used to ship it away sulfur is also used in the vulcanizing of rubber stretchy rubber articles such as hot water bottles and ice bags contain small quantities of sulfur Lord selford used in part number of which this cap is made so first when mixed with such chemical does lead arsonist makes an excellent fungicide for preventing the growth of life or mildew on plants so Furyk acid has literally thousands of users here it is used to treat metals before they are tinned or galvanized in this process known as tickling the metal is lowered into a turbulent path of the loops of uric acid where a surface deposits and scale are removed by a chemical action one of the most important uses of sulphuric acid is in the manufacture of super phosphate fertilizer of which tremendous confused every year in making this fertilizer sulfuric acid is used on insoluble fox to convert it into calcium acid phosphate which is soluble and therefore available as a plant food phosphate found in bones is converted into fertilizer in the same manner in sulfa drugs medical science has used the yellow mineral to forge a powerful weapon against disease and infection throughout the centuries man has continually found more uses for sulfur and the future may uncover many new cell for compounds which will be a further benefit to mankind