• ChemBase ID: 136085
• Molecular Formular: O2
• Molecular Mass: 35.998322
• Monoisotopic Mass: 35.998322
• SMILES: [18O]=[18O]
• Canonical SMILES: [18O]=[18O]
• InChI: InChI=1S/O2/c1-2/i1+2,2+2
• InChIKey: MYMOFIZGZYHOMD-XPULMUKRSA-N

NAMES AND DATABASE IDS

Names

• Synonyms: Oxygen-18O2; 氧气-18O2

Database IDs

• CAS Number: 32767-18-3
• MDL Number: MFCD00084251
• PubChem SID: 162230356; 24872565; 24881829
• PubChem CID: 10313042

CALCULATED PROPERTIES

• H Acceptors: 2
• H Donor: 0
• LogD (pH = 5.5): -0.27723172
• LogD (pH = 7.4): -0.27723172
• Log P: -0.27723172
• Molar Refractivity: 2.8858 cm^3
• Polarizability: 1.478656 Å^3
• Polar Surface Area: 34.14 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Melting Point: -218 °C(lit.)
• Boiling Point: -183 °C(lit.)
• Vapor Density: 1.11 (vs air)
• Mass Shift: M+4

Safety Information

• European Hazard Symbols: Oxidising (O)
• UN Number: 1072
• German water hazard class: 3
• Hazard Class: 2.2
• Risk Statements: 8
• GHS Pictograms: GHS03; GHS04
• GHS Signal Word: Danger
• GHS Hazard statements: H270-H280
• GHS Precautionary statements: P220-P410 + P403
• Personal Protective Equipment: Eyeshields, Gloves, half-mask respirator (US), multi-purpose combination respirator cartridge (US)
• RID/ADR: UN 1072 2.2

Product Information

• Purity: 99.99% (CP)
• Isotopic Purity: 25 atom % 18O (random); 50 atom % 18O (random); 90 atom % 18O; 97 atom % 18O; 99 atom % 18O
• Linear Formula: 18O2

DETAILS

Sigma Aldrich - 602876

Packaging
This product may be available from bulk stock and can be packaged on demand. For information on pricing, availability and packaging, please contact Stable Isotopes Customer Service.

Sigma Aldrich - 602892

Packaging
500 mL in Sure-Pac™
Sure/Pac™ cylinder with brass 1/4" male NPT valve
This product may be available from bulk stock and can be packaged on demand. For information on pricing, availability and packaging, please contact Stable Isotopes Customer Service.
Legal Information
Sure/Pac is a trademark of Sigma-Aldrich Co. LLC

Sigma Aldrich - 602868

Packaging
This product may be available from bulk stock and can be packaged on demand. For information on pricing, availability and packaging, please contact Stable Isotopes Customer Service.

Sigma Aldrich - 490474

Packaging
500 mL in Sure-Pac™
This product may be available from bulk stock and can be packaged on demand. For information on pricing, availability and packaging, please contact Stable Isotopes Customer Service.
Recommended products
Brass hose adapter Z146811 or brass body mini gas regulator Z513539 is recommended.

Sigma Aldrich - 602922

Packaging
This product may be available from bulk stock and can be packaged on demand. For information on pricing, availability and packaging, please contact Stable Isotopes Customer Service.

Sigma Aldrich - 602906

Packaging
This product may be available from bulk stock and can be packaged on demand. For information on pricing, availability and packaging, please contact Stable Isotopes Customer Service.