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Sigma-Aldrich

Platinum

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

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Synonym(s):
Platinum element, Platinum gray
Empirical Formula (Hill Notation):
Pt
CAS Number:
Molecular Weight:
195.08
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

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.)

SMILES string

[Pt]

InChI

1S/Pt

InChI key

BASFCYQUMIYNBI-UHFFFAOYSA-N

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.

Application

Platinum wire finds major applications as an electrode, such as:
  • Auxiliary electrode in flow cell to determine ammonia content.
  • Electrodes for photoconductive stimulation of neurons cultured on silicon wafers.
  • Electrode to give current flow in electrophoresis chamber for ion migration.
Additionally, Pt wire may be used:
  • As a microelectrode-indicator electrode in voltammetry.
  • As a transvascular embolic agent.
  • To study chronopotentiometry of hydrogen peroxide with a platinum wire electrode or
  • In gas detection instruments.

Quantity

1 g = 25 cm; 4 g = 100 cm

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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