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Mercury |
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Typical Properties: Symbol: HgAtomic Number: 80 Atomic Weight: 200.59 Density: Solid (at -39 oC): 14.193 g/cm3 Liquid (at Melting Point): 14.43 g/cm3 at 0 oC: 13.595 g/cm3 at 20 oC: 13.546 g/cm3 at 100 oC: 13.352 g/cm3 Freezing Point: -38.87 oC Boiling Point: 356.58 oC at 1 atm Thermal Conductivity: at 0 oC: 8.21 W/m ⋅ K at 60 oC: 9.67 W/m ⋅ K at 120 oC: 10.9 W/m ⋅ K Electrical Resistivity: 984 nΩ ⋅ m at 50 oC Specific Heat: 0.1377 kJ/kg ⋅ K at 350 K Heat of Vaporization: 61.42 kJ/kg at 25 oC Latent Heat of Fusion: 11.8 kJ/kg Production Process: To insure personnel safety and high quality material mercury must be distilled in a controlled environment. The closed distillation process first heats the mercury to a constant temperature under vacuum. The resulting mercury vapor is then captured in vapor coils that are cooled by high velocity fans. After distillation the material is visually inspected and the "Wichers Test" is performed. The test is done by pouring a small amount of mercury into a clean stainless steel or plastic dish and observing a clean mirror-like surface. The test is concluded when the mercury in the dish is swirled and no "tailing" appears. The mercury is then analyzed by an independent laboratory.Typical Analysis in Parts per Billion: Hg: 99.99985+
*Al <50 *Cu <50 *Si <50 *Sb <100 *Au <50 *Ag <50 *As <100 *Fe <50 *Te <100 *Bi <50 *Pb <50 *Tl <100 *Cd <50 *Mg <50 *Sn <50 *Ca <50 *Mo <100 *V <50 *Cr <50 *Pt <50 *Zn <100 * Below limits of detection. |