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Graphite

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Graphite Basic information
Graphite Chemical Properties
  • Melting point:3652-3697 °C(lit.)
  • Boiling point:4830°C
  • Density 2.2 g/mL at 25 °C
  • storage temp. no restrictions.
  • form rod
  • Specific Gravity2.25
  • color black
  • PH5-6 (50g/l, H2O, 20℃)(slurry)
  • Resistivity(Electrical resistivity: surface 0.06 Ω/sq, sheet 2.7 μΩ m)
  • Water Solubility Insoluble in water.
  • Sensitive Air & Light Sensitive
  • Merck 13,4554
  • NIST Chemistry ReferenceGraphite(7782-42-5)
  • EPA Substance Registry SystemGraphite (7782-42-5)
Safety Information
MSDS
Graphite Usage And Synthesis
  • Chemical Propertiessoft dark grey solid
  • Chemical PropertiesGraphite is crystallized carbon and usually appears as soft, black scales. There are two types of graph ite, natural and artificial (activated). Natural and synthetic graphite may be mixed with each other or contain other additives.
  • UsesFor "lead" pencils, refractory crucibles, stove polish; as pigment, lubricant, graphite cement; for matches and explosives, commutator brushes, anodes, arc-lamp carbons, electroplating; polishing Compounds, rust and needle-paper; coating for cathode ray tubes; moderator in nuclear piles.
  • UsesGraphite has been used alone to make refractory products for the lower blast furnace linings, and electrodes for steel and aluminum production. They are also commonly used in conjunction with other refractory raw materials. These materials are highly refractory nonwettable materials and are useful refractories in nonoxidizing environments. Carbon blacks are co
  • UsesSimilar to those of natural graphite in refractories and electrical products
  • DefinitionAn allotrope of CARBON. Graphite is a good conductor of heat and electricity. The atoms are arranged in layers which cleave easily and graphite is used as a solid lubricant.
  • General DescriptionA mineral form of the element carbon. Hexagonal crystals or thin leaf-like layers. Steel-gray to black with a metallic luster and a greasy feel. An electrical conductor. Used for high-temperature crucibles, as a lubricant and in "lead" pencils.
  • Reactivity ProfileGRAPHITE is non-flammable in bulk form, but combustible. A reducing agent. Mixtures of graphite dust and air are explosive when ignited.Reacts violently with very strong oxidizing agents such as fluorine, chlorine dioxide, and potassium peroxide. Almost inert chemically when in bulk form. Keep away from ignition sources and oxidizing agents.
  • Health HazardPure synthetic graphite acts as an inert or nuisance dust.
  • Industrial usesGraphite is a form of carbon. It was formerlyknown as black lead, and when first used forpencils was called Flanders’ stone. It is a naturalvariety of elemental carbon with a grayishblackcolor and a metallic tinge.
    Carbon and graphite have been used inindustry for many years, primarily as electrodes,arc carbons, brush carbons, and bearings.In the last decade or so, development ofnew types and emergence of graphite fibers asa promising reinforcement for high-performancecomposites have significantly increasedthe versatility of this family of materials.
  • Potential ExposureNatural graphite is used in foundry facings, steel making lubricants, refractories, crucibles, pencil “lead,” paints, pigments, and stove polish. Artificial graphite may be substituted for these uses with the excep tion of clay crucibles; other types of crucibles may be pro duced from artificial graphite. Additionally, it may be used as a high temperature lubricant or for electrodes. It is uti lized in the electrical industry in electrodes, brushes, con tacts, and electronic tube rectifier elements; as a constituent in lubricating oils and greases; to treat friction elements, such as brake linings; to prevent molds from sticking together; and in moderators in nuclear reactors. In addition, concerns have been expressed about synthetic graphite in fibrous form. Those exposed are involved in production of graphite fibers from pitch or acrylonitrile fibers and the manufacture and use of composites of plastics, metals, or ceramics reinforced with graphite fibers.
  • ShippingUN1362 Carbon, activated, Hazard Class: 4.2; Labels: 4.2-Spontaneously combustible material, International.
  • Purification MethodsTreat graphite with hot 1:1 HCl. Then filter, wash and the dried powdered is heated in an evacuated quartz tube at 1000o until a high vacuum is obtained. Cool this and store it in an atmosphere of helium [Craig et al. J Phys Chem 60 1225 1956].
  • IncompatibilitiesGraphite is a strong reducing agent and reacts violently with oxidizers, such as fluorine, chlorine trifluoride, and potassium peroxide. Forms an explosive mixture with air. May be spontaneously combustible in air.
  • Waste DisposalDo not incinerate. Carbon (graphite) fibers are difficult to dispose of by incineration. Waste fibers should be packaged and disposed of in a land fill authorized for the disposal of special wastes of this nature, or as otherwise may be required by law.
Graphite Preparation Products And Raw materials
Graphite(7782-42-5)Related Product Information
GraphiteSupplierMore
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  • Company Name:Alfa Aesar
  • Tel:400-610-6006
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