- HAFNIUM CHLORIDE
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- $5.00 / 1KG
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2024-09-13
- CAS:13499-05-3
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 20TONS
- HAFNIUM CHLORIDE
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- $6.00 / 1KG
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2024-09-06
- CAS:13499-05-3
- Min. Order: 25KG
- Purity: More than 99%
- Supply Ability: 2000KG/Month
- Hafnium(IV) chloride
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- $0.00 / 1kg
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2024-08-28
- CAS:13499-05-3
- Min. Order: 1kg
- Purity: 99%
- Supply Ability: 1000000
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- Jun 16,2022
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| Hafnium(IV) chloride Basic information |
| Hafnium(IV) chloride Chemical Properties |
Melting point | 432 °C (lit.) | Boiling point | 315.47°C (estimate) | density | 1.89 g/cm3 | vapor pressure | 1 mm Hg ( 190 °C) | storage temp. | Inert atmosphere,Room Temperature | solubility | Soluble in methanol and acetone. | form | Powder | color | White | Water Solubility | Soluble in water, methanol and acetone. | Hydrolytic Sensitivity | 7: reacts slowly with moisture/water | Sensitive | Moisture Sensitive | Merck | 14,4588 | crystal system | Monoclinic | Space group | P2/c | Lattice constant | a/nm | b/nm | c/nm | α/o | β/o | γ/o | V/nm3 | 0.6327 | 0.7377 | 0.62 | 90 | 109.05 | 90 | 0.2735 |
| Exposure limits | ACGIH: TWA 0.5 mg/m3 NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 | InChIKey | PDPJQWYGJJBYLF-UHFFFAOYSA-J | CAS DataBase Reference | 13499-05-3(CAS DataBase Reference) | EPA Substance Registry System | Hafnium chloride (HfCl4), (T-4)- (13499-05-3) |
Hazard Codes | C | Risk Statements | 34 | Safety Statements | 26-36/37/39-45 | RIDADR | UN 3260 8/PG 2 | WGK Germany | 3 | F | 9-21 | TSCA | Yes | HazardClass | 8 | PackingGroup | II | HS Code | 28273985 |
| Hafnium(IV) chloride Usage And Synthesis |
Chemical Properties | Hafnium(IV) chloride is the inorganic compound with the formula HfCl4. This colourless solid is the precursor to most hafnium organometallic compounds. It has a variety of highly specialized applications, mainly in materials science and as a catalyst. | Physical properties | White monoclinic crystal; sublimes at 317°C; melts at 432°C at 33 atm (triple point); critical temperature 452.5°C; critical pressure 53.49 atm; critical volume 314 cm3/mol.
| Uses | Hafnium tetrachloride is an important intermediate in production of hafnium metal. It also is used to prepare many hafnium compounds. | Uses | Hafnium chloride tetrahydrofuran complex is an efficient catalyst for the Diels-Alder cycloadditions, Ziegler-Natta polymerization of alkenes. It is used as control rods in nuclear reactors and in manufacture of light bulb filaments. | Uses | Hafnium (IV) chloride can be used to catalyze the direct ester condensation of carboxylic acids with alcohols effectively. | Preparation | Hafnium(IV) chloride can be prepared (i) by chlorination of hafnium dioxide in the presence of carbon: HfO2 + 2Cl2 + C → HfCl4 + 2CO It also may be prepared by several other methods, such as (ii) reaction of carbon tetrachloride with hafnium dioxide above 450°C; (iii) heating a mixture of hafnium dioxide and carbon above 700°C; and (iv) reaction of chlorine with hafnium at elevated temperatures. | Reactions | Hafnium(IV) chloride hydrolyzes, evolving hydrogen chloride:
HfCl4 + H2O→ HfOCl2+ 2 HCl
Aged samples thus often are contaminated with oxychlorides, which are also colourless.
THF forms a monomeric 2:1 complex:
HfCl4+ 2 OC4H8→HfCl4(OC4H8)2 | Flammability and Explosibility | Non flammable | Solubility in organics | Soluble in methanol, acetone, reacts strongly with water, highly hygroscopic, hydrolyzes in water. | Structure and conformation | This group 4 halide contains hafnium in the +4 oxidation state. Solid Hafnium(IV) chloride is a polymer with octahedral Hf centers. Of the six chloride ligands surrounding each Hf centre, two chloride ligands are terminal and four bridge to another Hf centre. |
| Hafnium(IV) chloride Preparation Products And Raw materials |
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