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Transition Metals

Stock No.
NS6130-12-000433
CAS
7440-58-6
MSDS
MSDS-PDF
Specifications
SPEC-PDF
COA
COA-PDF
Catalogue
MSDS pdf

Hafnium Micro Powder

(Hf, Purity: 99.9%, APS: 40-50 µm)
Hafnium Micro Powder
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ProductHafnium Micro Powder
Stock No NS6130-12-000433
CAS 7440-58-6 Confirm
APS 40-50 µm Confirm
Purity 99.9%Confirm
Molecular FormulaHfConfirm
Molecular Weight 178.49g/mol Confirm
Form PowderConfirm
Color GrayConfirm
Density 13.31 g/cm³Confirm
Melting Point 2233 °CConfirm
Boiling Point 4603 °CConfirm
Thermal Expansion (25 °C) 5.9 µm•m-1•K-1Confirm
Resistivity 29.6 μΩ-cm, 0°CConfirm
Quality ControlEach Lot of was tested successfully
Main Inspect VerifierManager QC

Typical Chemical Analysis

Assay99.9%

Expert Reviews

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Dr. Huojin Chan (University of Science and Technology of China, Hefei, Anhui, China)

Hafnium Micro Powder: Transition metals form coloured compounds, are good conductors of heat and electricity, can be hammered or bent into shape easily, less reactive than alkali metals such as sodium, have high melting points, are hard and tough, have high densities, form paramagnetic compounds due to the presence of unpaired d electrons.Transition metals can bound to variety of ligands, allowing for a wide variety of transition metal complexes.

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Dr. Ms. Yi Yen Shi  (King Mongkut’s University of Technology Thonburi,Bangkok, Thailand)

Hafnium Micro Powder: Transition metal as “an element whose atom has a partially filled d sub-shell, or which can give rise to cations with an incomplete d sub-shell”.The transition metals are placed in the centre of the periodic table, between groups 2 and 3. They are generally hard and dense, and less reactive than the alkali metals. Iron, copper, silver and gold are important transition metals.

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Dr. Myron Rubenstein Ph.D (Polytechnic University of Turin, Italy)

Hafnium Micro Powder: Transition metal complexes are important in catalysis, photochemistry, materials synthesis, and biological systems. Transition metals provide a surface on which a reaction can take place. Reactants are adsorbed onto the surface of the metal and held in place while a reaction occurs. Transition metal ions make good catalysts because of their ability to change oxidation state by gaining or losing electrons.

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Dr. Bruce Perrault Ph.D (Georgia Institute of Technology (Georgia Tech), USA)

Hafnium Micro Powder: Transition metal compounds are paramagnetic when they have one or more unpaired d electrons. In octahedral complexes with between four and seven d electrons both high spin and low spin states are possible. Tetrahedral transition metal complexes such as [fecl4]2- are high spin because the crystal field splitting  is small sso that the energy to be gained by the virtue of the electrons being in lower energy orbitals is always less than the energy needed to pair up the spins.

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Dr. Hans Roelofs Ph.D (National Technical University of Athens, Greece)

Hafnium Micro Powder: In general, transition metals possess a high density and high melting points and boiling points. These properties are due to metallic bonding by delocalized d electrons, leading to cohesion which increases with the number of shared electrons. However the group 12 metals have much lower melting and boiling points since their full d subshells prevent d–d bonding, which again tends to differentiate them from the accepted transition metals.

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Hafnium Micro Powder

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From us, you can easily purchase Hafnium Micro Powder (Hf, Purity: 99.9%, APS: 40-50 µm) at great prices. Place online order and we will dispatch your order through DHL, FedEx, UPS. You can also request for a quote by mailing us at sales@nanoshel.com. We invite you to contact us for further information about our company and our capabilities. At Nanoshel, we could be glad to be of service to you. We look forward to your suggestions and feedback.
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