sulfur has a distinct orange-yellow, the formation of a strong irritating odor when burned. Metal sulfides in the smell of burning can be asserted that the sulfur in ancient times was to find and use.
sulphide is pyrite, followed by non-ferrous metal elements (Cu and Pb, Zn) of sulfide ore. Natural sulfate as the most abundant gypsum CaSO4 · 2H2O and Glauber's salt of Na2SO4 · 10H2O. From its natural ore or compound preparation. The crater at the existence of a large number of sulfur.
the world's annual consumption of a large number of sulfur for the manufacture of sulfuric acid, and one for the rubber products, paper, sulfate, and sulfide production, as well as part of the sulfur for agriculture and dyeing, medicine.
element symbols: S
1789 French chemist Lavoisier published the first modern periodic table, sulfur included in the table to determine the indivisibility of the sulfur. The latter half of the 18th century German chemist Mitch Dietrich and the French chemist Baume found that sulfur has a different shape, the proposed sulfur allotrope.
mostly for manufacturing sulfuric acid. Also need a lot of sulfur in the rubber products industry, matches, fireworks, sulfate, sulfite, sulfide and other products. The part used for the manufacture of drugs, pesticides, bleaching and dyeing agent.
element supporting information:
and Western alchemists attach great importance to the sulfur, sulfur as flammability of the embodiment, it is one of the elements that make up all objects. Chinese alchemy have made with a mixture of sulfur, saltpeter, gunpowder.
sulfur content in the earth's crust the 0.048
crystal structure: the unit cell is orthogonal unit cell.
Mohs hardness: 2.0
element types: non-metallic
discovery process: Ancient human understanding of the natural sulfur. Sulfur widely distributed.
Elemental physical properties:
usually pale yellow crystals, elements derived from the Latin, the original intent of the bright yellow. Sulfur has several allotropes, diamond-shaped sulfur (orthorhombic sulfur) and monoclinic sulfur is now known to be the most important crystalline sulfur. They are the S8 ring molecules. Melting point boiling point of
density exists the conditions
rhombic sulfur (S8) 2.07 grams 1.96 grams of monoclinic sulfur (S8) / cm 3112.8 ° C to 444.674 ℃ to 200 ℃ the following
/ cm 3119.0 ℃ 444.6 ° C 200 ° C above
thermal conductivity and electrical conductivity of the sulfur elemental difference. Crisp, insoluble in water, soluble in carbon disulfide (elastic sulfur only partially dissolved). Amorphous sulfur is mainly elastic sulfur, quickly dumping ice water obtained from the molten sulfur. Instability can be transformed into crystalline sulfur (rhombic sulfur), rhombic sulfur is the only stable at room temperature the presence of sulfur forms.
element source:
sulfur in nature, there is the elemental state, every volcanic eruption will be a large number of underground sulfur to the surface. Sulfur formation and a variety of metal sulfide and sulfate, widely exist in nature.
in Western China, the ancient medical scientist regard the sulfur used in medicine, a famous doctor Li Shizhen compiled the "Compendium of Materia Medica", to the sulfur in the pharmaceutical The use of long cold: governance waist kidney, in addition to the Bi stubborn cold and heat, cold, raw Xian cure scabies.
chemical properties the:
valence -2, 2, 4 and 6. The first ionization energy of 10.360 eV World pipe network reported that the world's steel pipe network to provide the world's steel pipe network editor . Chemical properties are more lively, with oxygen, metals, hydrogen, halogens (except iodine), and outside most of the known elements in compounds. Reaction with strong oxidizing acids, salt, oxides, concentrated alkali solution. That there exists a positive oxidation state, there are also negative oxidation state, can form ionic compounds, covalent compounds and ligand covalent compounds.
element use:
Elements: sulfur
elements of atomic weight: 32.066
In the West, the ancient people that formed by the combustion of the sulfur smoke and strong odor can get rid of the devil. Sulfur is used to clean the housing world pie network information , because many people believe that the smell of sulfur burning to eliminate all the demons and all evil forces, about 4,000 years ago, the Egyptians in the writings of ancient Roman naturalist Pliny wrote: has been formed by sulfur burning of sulfur dioxide bleaching cloth. Also mentioned in the writings of ancient Rome, the famous poet Homer sulfur burning disinfection and bleaching.
commonly known as: sulfur
sulfur widely used to promote the extraction and refining of sulfur, with the development of industry, sulfur plays a key role in the preparation of sulfuric acid, sulfuric acid is the mother of industry, the ubiquitous need it. 1894 German-born American industrial chemist Vladimir facilities to create a used hot water, sulfur extracted directly from the deep underground.