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| | ZIRCONIUM IODIDE Basic information |
| | ZIRCONIUM IODIDE Chemical Properties |
| Melting point | 499°C | | Boiling point | 431°C (estimate) | | density | 4.85 | | storage temp. | under inert gas (nitrogen or Argon) at 2–8 °C | | solubility | very soluble in H2O | | form | powder | | color | Yellow | | Specific Gravity | 4.914 | | Water Solubility | Insoluble in water. | | Hydrolytic Sensitivity | 7: reacts slowly with moisture/water | | Sensitive | Air & Moisture Sensitive | | Merck | 14,10178 | | Exposure limits | ACGIH: TWA 5 mg/m3; STEL 10 mg/m3
NIOSH: IDLH 25 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3 | | CAS DataBase Reference | 13986-26-0(CAS DataBase Reference) | | EPA Substance Registry System | Zirconium iodide (ZrI4) (13986-26-0) |
| Hazard Codes | C | | Risk Statements | 34 | | Safety Statements | 22-26-27-36/37/39-45 | | RIDADR | UN 3260 8/PG 2 | | WGK Germany | 3 | | TSCA | No | | HazardClass | 8 | | PackingGroup | III |
| | ZIRCONIUM IODIDE Usage And Synthesis |
| Description | Zirconium(IV) iodide, ZrI4, is the most readily available iodide of zirconium. It is an orange-colored solid that degrades in the presence of water. The compound was once renowned as an intermediate in the purification of zirconium metal. This compound is volatile, subliming as intact tetrahedral ZrI4 molecules.
| | Chemical Properties | orange crystal(s); fumes heavily in air; cub, a=1.179nm [KIR84] [MER06] | | Uses | Used in the van Arkel-de Boer refining process. | | Preparation | It is prepared by the direct reaction of powdered zirconium metal and iodine. Pyrolysis of zirconium(IV) iodide gas by contact of hot wire was the first industrial process for the commercial production of pure ductile metallic zirconium. | | Structure and conformation | Like most binary metal halides, it has a polymeric structure. The compound exists as a polymer consisting of octahedral Zr(IV) centers, each with a pair of terminal iodide ligands and four doubly bridging iodide ligands. The Zr-I distances are 2.692 (terminal) and 3.030 A? . |
| | ZIRCONIUM IODIDE Preparation Products And Raw materials |
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