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Merck
CN

266779

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
UNSPSC Code:
12352300
PubChem Substance ID:
EC Number:
231-166-4
MDL number:
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InChI key

VBJZVLUMGGDVMO-UHFFFAOYSA-N

InChI

1S/Hf

SMILES string

[Hf]

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.)

Quality Level

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Preparation Note

2 g = 20 cm

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Christopher C Underwood et al.
Inorganic chemistry, 52(1), 237-244 (2012-12-19)
This paper describes the hydrothermal chemistry of alkali hafnium fluorides, including the synthesis and structural characterization of five new alkali hafnium fluorides. Two ternary alkali hafnium fluorides are described: Li(2)HfF(6) in space group P31m with a = 4.9748(7) Å and
Yu Gong et al.
Dalton transactions (Cambridge, England : 2003), 41(38), 11706-11715 (2012-08-18)
The isolated group 4 metal oxydifluoride molecules OMF(2) (M = Ti, Zr, Hf) with terminal oxo groups are produced specifically on the spontaneous reactions of metal atoms with OF(2) through annealing in solid argon. The product structures and vibrational spectra
Byung-Hak Moon et al.
Journal of nanoscience and nanotechnology, 11(8), 7428-7432 (2011-11-23)
In this study, we investigated the electrochemical oxide nanotube formation on the Ti-35Ta-xHf alloys for dental materials. The Ti-35Ta-xHf alloys contained from 3 wt.% to 15 wt.% Hf were manufactured by arc melting furnace. The nanotube oxide layers were formed
Brian R Dorvel et al.
ACS nano, 6(7), 6150-6164 (2012-06-15)
Nanobiosensors based on silicon nanowire field effect transistors offer advantages of low cost, label-free detection, and potential for massive parallelization. As a result, these sensors have often been suggested as an attractive option for applications in point-of-care (POC) medical diagnostics.
Michael J Sgro et al.
Chemical communications (Cambridge, England), 49(26), 2610-2612 (2013-02-07)
Hf-phosphinoamide cation complexes behave as metal-based frustrated Lewis pairs and bind one or two equivalent of CO2 and in as well can activate CO2 in a bimetallic fashion to give a pseudo-tetrahedral P2CO2 fragment linking two Hf centres.

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