Platinum

Name: Platinum
Brand: ALDRICH

wire, diam. 0.5 mm, 99.9% trace metals basis

Sinónimos:

Platinum element, Platinum gray

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Fórmula empírica (notación de Hill):

Número CAS:

7440-06-4

Peso molecular:

195.08

NACRES:

NA.23

PubChem Substance ID:

24856207

UNSPSC Code:

12141734

EC Number:

231-116-1

MDL number:

MFCD00011179

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Nombre del producto

Platinum, wire, diam. 0.5 mm, 99.9% trace metals basis

InChI key

BASFCYQUMIYNBI-UHFFFAOYSA-N

InChI

1S/Pt

SMILES string

[Pt]

assay

99.9% trace metals basis

form

wire

resistivity

10.6 μΩ-cm, 20°C

diam.

0.5 mm

bp

3827 °C (lit.)

mp

1772 °C (lit.)

density

21.45 g/cm³ (lit.)

Quality Level

100

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Este artículo	327492	444685	298093
Sigma-Aldrich 267228 Platinum	Sigma-Aldrich 327492 Platinum	Sigma-Aldrich 444685 Platinum	Sigma-Aldrich 298093 Platinum
assay 99.9% trace metals basis	assay 99.9% trace metals basis	assay 99.9% trace metals basis	assay 99.9% trace metals basis
form wire	form wire	form wire	form gauze
density 21.45 g/cm³ (lit.)	density 21.45 g/cm³ (lit.)	density 21.45 g/cm³ (lit.)	density 21.45 g/cm³ (lit.)
resistivity 10.6 μΩ-cm, 20°C	resistivity 10.6 μΩ-cm, 20°C	resistivity 10.6 μΩ-cm, 20°C	resistivity 10.6 μΩ-cm, 20°C
mp 1772 °C (lit.)	mp 1772 °C (lit.)	mp 1772 °C (lit.)	mp 1772 °C (lit.)
bp 3827 °C (lit.)	bp 3827 °C (lit.)	bp 3827 °C (lit.)	bp 3827 °C (lit.)

Application

Platinum wire finds major applications as an electrode, such as:

Auxiliary electrode in flow cell to determine ammonia content.[1]
Electrodes for photoconductive stimulation of neurons cultured on silicon wafers.
Electrode to give current flow in electrophoresis chamber for ion migration.[2]

Additionally, Pt wire may be used:

As a microelectrode-indicator electrode in voltammetry.[2]
As a transvascular embolic agent.
To study chronopotentiometry of hydrogen peroxide with a platinum wire electrode or
In gas detection instruments.

General description

Platinum (Pt) is a highly ductile, malleable and unreactive metal. It is resistant to corrosion and stable at high temperatures. Although resistant to hydrochloric and nitric acid, it dissolves readily in hot aqua regia to form chloroplatinic acid.

Preparation Note

1 g = 25 cm; 4 g = 100 cm

Clase de almacenamiento

13 - Non Combustible Solids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

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An aqueous ammonia sensor based on an inkjet-printed polyaniline nanoparticle-modified electrode.

Karl Crowley et al.

The Analyst, 133(3), 391-399 (2008-02-27)

A sensor for the amperometric detection of aqueous ammonia was fabricated using the inkjet printing of dodecylbenzene sulfonate (DBSA)-doped polyaniline nanoparticles (nanoPANI) onto a screen-printed carbon paste electrode. The combination of the environmentally inert, aqueous nanoparticle dispersion with the inkjet

Voltammetry with Stationary Microelectrodes of Platinum Wire.

Laitinen HA and Kolthoff IM

The Journal of Physical Chemistry, 45(7), 1061-1079 (1941)

Fabrication of graphene-platinum nanocomposite for the direct electrochemistry and electrocatalysis of myoglobin.

Wei Sun et al.

Materials science & engineering. C, Materials for biological applications, 33(4), 1907-1913 (2013-03-19)

In this paper a platinum (Pt) nanoparticle decorated graphene (GR) nanosheet was synthesized and used for the investigation on direct electrochemistry of myoglobin (Mb). By integrating GR-Pt nanocomposite with Mb on the surface of carbon ionic liquid electrode (CILE), a

Increased sensitivity to chemotherapy induced by CpG-ODN treatment is mediated by microRNA modulation.

Loris De Cecco et al.

PloS one, 8(3), e58849-e58849 (2013-03-14)

We recently reported that peritumoral CpG-ODN treatment, activating TLR-9 expressing cells in tumor microenvironment, induces modulation of genes involved in DNA repair and sensitizes cancer cells to DNA-damaging cisplatin treatment. Here, we investigated whether this treatment induces modulation of miRNAs

Metal-catalyzed cascade rearrangements of 3-alkynyl flavone ethers.

Yuan Xiong et al.

Organic letters, 15(8), 1962-1965 (2013-04-12)

Metal-mediated rearrangements of 3-alkynyl flavone ethers are reported. The overall process involves 5-endo enyne cyclization to a platinum-containing spiro-oxocarbenium intermediate which may be trapped with methanol to produce spirodihydrofurans or further rearranged to afford either allenyl chromanediones or benzofuranones.

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