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Fluorine

Fluorine is the most electronegative and reactive of all elements. Natural fluorine is monoisotopic, consisting of fluorine-19. It has found uses in studies of protein structures and conformational changes. Elemental fluorine is occasionally used as a fluorinating agent in industrial processes. The largest use for elemental fluorine is preparing uranium hexafluoride, used in the production of nuclear fuels. Other than those, elemental fluorine is used for the production of tetrafluoromethane, plasma etching in semiconductor manufacturing, flat panel display production, and microelectromechanical systems fabrication. Inorganic fluorides and organofluorine compounds, a fraction of which are prepared from elemental fluorine, find use in a variety of materials and chemicals, including important pharmaceuticals, agrochemicals, lubricants, and textiles. Hydrofluoric acid and certain fluoride-containing salts are useful etchants for glass. In the electrolysis of the metal and its purification, it acts to lower the melting point of aluminium oxide and acts like a powerful flux for glass. Perfluorooctanoic acid and tetrafluoroethylene are directly used in water resistant coatings and in the production of low friction plastics such as Teflon, or PTFE. Other fluorine-based compounds are used in the production of haloalkanes such as chlorofluorocarbons, which are used extensively in air conditioning and in refrigeration. They have been banned for these applications because they contribute to ozone destruction.

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MDC714

HYPERSPERSE 25 KG

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Samarium

Samarium was discovered in 1879 by the French chemist Paul Émile Lecoq de Boisbaudran and named after the mineral samarskite where it was isolated from. It has no significant biological role and is only slightly toxic. One of the most important applications of samarium is in samarium-cobalt magnets, these magnets are found in small motors, headphones, high-end magnetic pickups for guitars and related musical instruments. Another important application of samarium and its compounds is as catalyst and chemical reagent. In its usual oxidized form, samarium is added to ceramics and glasses where it increases absorption of infrared light. Radioactive samarium-153 is used to kill cancer cells in the treatment of lung cancer, prostate cancer, breast cancer and osteosarcoma. Samarium-doped calcium fluoride crystals were used as an active medium in one of the first solid-state lasers designed and constructed by Peter Sorokin and Mirek Stevenson at IBM research labs in early 1961.

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Selenium

Selenium is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature. It conducts electricity better in the light than in the dark, and is used in photocells. It is found in economic quantities in sulfide ores such as pyrite, partially replacing the sulfur in the ore matrix. The chief commercial uses for selenium today are in glass making and in chemicals and pigments. Uses in electronics, once important, have been supplanted by silicon semiconductor devices. It is used widely in vitamin preparations and other dietary supplements, in small doses. Some livestock feeds are fortified with selenium as well. It is used in the toning of photographic prints. Selenium is a catalyst in many chemical reactions and is widely used in various industrial and laboratory syntheses, especially organoselenium chemistry. It is also widely used in structure determination of proteins and nucleic acids by X-ray crystallography.

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Thallium

The two chemists, William Crookes and Claude-Auguste Lamy, discovered thallium independently in 1861 by the newly developed method of flame spectroscopy. Both discovered the new element in residues of sulfuric acid production. Approximately 60–70% of thallium production is used in the electronics industry, and the rest is used in the pharmaceutical industry and in glass manufacturing. It is also used in infrared detectors. It is highly toxic and was used in rat poisons and insecticides. Its use has been cut back or eliminated in many countries because of its nonselective toxicity.

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BC 83/132

BC 83/132 is a methyl hydrogen polysiloxane.

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Ball Clay

Ball clays are kaolinitic sedimentary clays, that commonly consist of 20-80% kaolinite, 10-25% mica, 6-65% quartz.Ball clays are relatively scarce deposits due to the combination of geological factors needed for their formation and preservation.It is highly appreciated for its composition, strength and plasticity. It also plays an important role in ceramic manufacturing industry,Sanitaryware, Electrical porcelain insulators, Wall and floor tiles etc.

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Bentonite

Bentonite is an absorbent aluminium phyllosilicate, generally impure clay consisting mostly of montmorillonite. There are different types of bentonites and their names depend on the dominant elements, such as potassium (K), sodium (Na), calcium (Ca), and aluminum (Al). As noted in several places in the geologic literature, there are some nomenclatorial problems with the classification of bentonite clays. Bentonite usually forms from weathering of volcanic ash, most often in the presence of water. However, the term bentonite, as well as a similar clay called tonstein, have been used for clay beds of uncertain origin. For industrial purposes, two main classes of bentonite exist: sodium and calcium bentonite. In stratigraphy and tephrochronology, completely devitrified (weathered volcanic gla

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KEMIGUARD

KEMIGUARD is a temporary protective coating for metal, wood, ceramic and plastic articles, offering protection from scratches, dust, sunlight, rain, alkali and acid attacks during transportation. It can be peeled off easily.

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Lanthanum

Lanthanum is a chemical element. It is found in some rare-earth minerals, usually in combination with cerium and other rare earth elements. Lanthanum compounds have numerous applications as catalysts, additives in glass, carbon lighting for studio lighting and projection, ignition elements in lighters and torches, electron cathodes, scintillators, and others. Lanthanum carbonate was approved as a medication against renal failure.

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