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266779

Sigma-Aldrich

Hafnium

wire, diam. 1.0 mm, ≥99.9% trace metals basis (purity excludes ~2% zirconium)

Synonym(s):

Celtium, Hafnium element

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About This Item

Empirical Formula (Hill Notation):
Hf
CAS Number:
Molecular Weight:
178.49
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:

Quality Level

Assay

≥99.9% trace metals basis (purity excludes ~2% zirconium)

form

wire

resistivity

29.6 μΩ-cm, 0°C

diam.

1.0 mm

bp

4602 °C (lit.)

mp

2227 °C (lit.)

density

13.3 g/cm3 (lit.)

SMILES string

[Hf]

InChI

1S/Hf

InChI key

VBJZVLUMGGDVMO-UHFFFAOYSA-N

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Quantity

2 g = 20 cm

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Nicholas M Fahrenkopf et al.
ACS applied materials & interfaces, 4(10), 5360-5368 (2012-09-06)
Immobilization of biomolecular probes to the sensing substrate is a critical step for biosensor fabrication. In this work we investigated the phosphate-dependent, oriented immobilization of DNA to hafnium dioxide surfaces for biosensing applications. Phosphate-dependent immobilization was confirmed on a wide
John J Curley et al.
Dalton transactions (Cambridge, England : 2003), 41(1), 192-200 (2011-10-25)
Treatment of Cp*Ir N(t)Bu (1) with the appropriate metallocene equivalent is an effective route for the preparation of the heterobimetallic complexes Cp*Ir(μ-N(t)Bu)MCp(2) (2-M, M = Ti, Zr, Hf). The electronic structures of the isostructural series of compounds, 2-M, are described
Tingting Zhao et al.
Journal of the mechanical behavior of biomedical materials, 13, 174-184 (2012-08-21)
NiTi shape memory alloy was modified by Hf ion implantation to improve its wear resistance and surface integrity against deformation. The Auger electron spectroscopy and x-ray photoelectron spectroscopy results indicated that the oxide thickness of NiTi alloy was increased by
Célia Lourenço et al.
The journal of physical chemistry. A, 116(51), 12399-12405 (2012-11-29)
Fourier transform ion cyclotron resonance mass spectrometry was used to characterize the gas-phase reactivity of Hf dipositive ions, Hf(2+)and HfO(2+), toward several oxidants: thermodynamically facile O-atom donor N(2)O, ineffective donor CO, and intermediate donors O(2), CO(2), NO, and CH(2)O. The
José Luis Olivares-Romero et al.
Journal of the American Chemical Society, 134(12), 5440-5443 (2012-03-17)
Asymmetric epoxidation of allylic and homoallylic amine derivatives catalyzed by Hf(IV)-bishydroxamic acid complexes is described. Under similar conditions, aldimine and ketimine produced oxaziridines. The sulfonyl group is demonstrated to be an effective directing group for these transformations.

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