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266809

Sigma-Aldrich

Hafnium

turnings, crystal bar, 99.7% trace metals basis

Synonym(s):

Celtium, Hafnium element

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About This Item

Empirical Formula (Hill Notation):
Hf
CAS Number:
Molecular Weight:
178.49
MDL number:
UNSPSC Code:
12141718
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

99.7% trace metals basis

form

turnings, crystal bar

resistivity

29.6 μΩ-cm, 0°C

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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Related Categories

Storage Class Code

11 - 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

Certificates of Analysis (COA)

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Laurence Maggiorella et al.
Future oncology (London, England), 8(9), 1167-1181 (2012-10-04)
There is considerable interest in approaches that could improve the therapeutic window of radiotherapy. In this study, hafnium oxide nanoparticles were designed that concentrate in tumor cells to achieve intracellular high-energy dose deposit. Conventional methods were used, implemented in different
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
Suresh Kumar Raman Pillai et al.
ACS applied materials & interfaces, 4(12), 7047-7054 (2012-12-01)
The large-scale application of semiconducting single-walled carbon nanotubes (s-SWCNTs) for printed electronics requires scalable, repeateable, as well as noncontaminating assembly techniques. Previously explored nanotube deposition methods include serial methods such as inkjet printing and parallel methods such as spin-coating with
Daqin Chen et al.
Chemical communications (Cambridge, England), 48(86), 10630-10632 (2012-09-27)
Novel Yb/Er(Tm):Na(3)MF(7) (M = Zr, Hf) nanocrystals with intrinsic single-band upconversion emission, in contrast to the routine lanthanide-doped fluoride nanocrystals which show typical multi-band upconversion emissions, are reported for the first time. Specifically, the red upconversion intensity of the Yb/Er:Na(3)ZrF(7)
Xuelu Ma et al.
Physical chemistry chemical physics : PCCP, 15(3), 901-910 (2012-12-04)
In this paper, the reaction mechanisms of CO assisted N(2) cleavage and functionalization activated by a dinuclear hafnium complex are studied using a density function theory (DFT) method. Several key intermediates (Ia, Ib, Ic and Id) with axial/equatorial N=C=O coordination

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