argon

• ChemBase ID: 137567
• Molecular Formular: Ar
• Molecular Mass: 39.948
• Monoisotopic Mass: 39.96238312
• SMILES: [Ar]
• Canonical SMILES: [Ar]
• InChI: InChI=1S/Ar
• InChIKey: XKRFYHLGVUSROY-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: argon
• IUPAC Traditional name: argon
• Synonyms: Argon; 氩

Database IDs

• CAS Number: 7440-37-1
• EC Number: 231-147-0
• MDL Number: MFCD00003431
• PubChem SID: 24857751; 162231829
• PubChem CID: 23968

CALCULATED PROPERTIES

• H Acceptors: 0
• H Donor: 0
• Log P: 0.0
• Molar Refractivity: 0.0 cm^3
• Polarizability: 2.5694933 Å^3
• Polar Surface Area: 0.0 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Melting Point: -189.2 °C(lit.)
• Boiling Point: -185.7 °C(lit.)
• Vapor Density: 1.38 (21 °C, vs air)

Safety Information

• RTECS: CF2300000
• UN Number: 1006
• German water hazard class: nwg
• Hazard Class: 2.2
• Personal Protective Equipment: Eyeshields, Gloves, half-mask respirator (US), multi-purpose combination respirator cartridge (US)
• RID/ADR: UN 1006 2.2

Product Information

• Purity: ≥99.998%
• Impurities: ≤3 ppm oxygen; ≤3 ppm water
• Empirical Formula (Hill Notation): Ar

DETAILS

Sigma Aldrich - 295000

Packaging
56 L in steel cylinder
Recommended products
Brass control valve Z146943 or either of brass regulators Z146706 and Z146714 is recommended.