Properties: Crystallized carbon with traces of Fe, SiO2, etc. Usually soft, black scales, crystals rare. d 2.09-2.23. Mohs' hardness = 1.0. Commercial varieties usually withstand temps up to 2820°. Sol in molten iron.
Density: d 2.09-2.23
CAUTION: Potential symptoms of overexposure are coughing, dyspnea, black sputum, decreased pulmonary function and lung fibrosis. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 154.
Use: For "lead" pencils, refractory crucibles, stove polish; as pigment, lubricant, graphite cement; for matches and explosives, commutator brushes, anodes, arc-lamp carbons, electroplating; polishing compds, rust and needle-paper; coating for cathode ray tubes; moderator in nuclear piles.
产品链接: 7782-42-5››