- HAFNIUM CHLORIDE
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- $5.00 / 1KG
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2024-05-11
- 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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2024-04-12
- 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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2024-01-06
- 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 | | 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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