768995

Helium

Messer^® CANGas, 99.999%

• Synonym(e): Helium gas
• Empirische Formel (Hill-System): He
• CAS-Nummer: 7440-59-7
• Molekulargewicht: 4.00
• EG-Nummer: 231-168-5
• MDL-Nummer: MFCD00011031
• UNSPSC-Code: 12352200
• PubChem Substanz-ID: 329767424
• NACRES: NA.22

Eigenschaften

• Dampfdichte: 0.14 (vs air)
• Qualitätsniveau: 100
• Beschreibung: Filling mass: 2g; Filling volume: 12L
• Assay: 99.999%
• Form: gas
• bp: -268.934 °C (lit.); −268.9 °C (lit.)
• mp (Schmelzpunkt): -272.2 °C (lit.)
• SMILES String: [He]
• InChI: 1S/He
• InChIKey: SWQJXJOGLNCZEY-UHFFFAOYSA-N

Beschreibung

Anwendung

Helium is a colourless and odourless rare gas that is much lighter than air. Application areas include leak detection, aeronautics, metallurgy, laser welding and technology, and meteorology (weather balloons). Helium is also used as a shielding gas, reactor cooling gas, carrier gas for gas chromatography, and cooling gas for production of optical fibres. It is also a filling gas for air bags and is a component of diving mixtures. Gas is easy to handle in a small, light pressure can, while the disposable container allows for aluminium recycling when finished.

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Rechtliche Hinweise

Messer is a registered trademark of Messer Group GmbH

Sicherheitshinweise

• Piktogramme: GHS04
• Signalwort: Warning
• H-Sätze: H280
• P-Sätze: P410 + P403
• Gefahreneinstufungen: Press. Gas Compr. Gas
• Lagerklassenschlüssel: 2A - Gases
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable