Description

Oxygen-18O2 CAS NO 32767-18-3 is a stable isotope-labeled form of molecular oxygen, where the standard oxygen-16 atoms are replaced with the heavier, non-radioactive oxygen-18 isotope. This product is a critical reagent in advanced research and analytical applications, offering a distinct isotopic signature for precise tracking and measurement. It is essential for scientists and engineers in the fields of metabolic research, environmental tracing, materials science, and nuclear magnetic resonance (NMR) studies.

Application

• Metabolic Pathway Analysis: Used as a tracer in biological and medical research to study oxygen utilization, cellular respiration, and metabolic fluxes in living systems.
• Environmental & Geochemical Tracing: Employed in atmospheric science and hydrology to track oxygen exchange processes, pollutant degradation, and water cycle studies.
• Materials Science Research: Utilized in the synthesis and analysis of oxide materials, thin films, and superconductors to investigate oxygen incorporation and diffusion mechanisms.
• Analytical Chemistry Standards: Serves as a primary standard or reference gas in isotope ratio mass spectrometry (IRMS) and other high-precision analytical techniques.
• NMR Spectroscopy: Acts as an oxidizing agent or reactant in synthesis where the 18O label is required for mechanistic studies or to simplify NMR spectra.
• Pharmaceutical Development: Applied in the research and development of new drug compounds to trace metabolic fate and study reaction pathways.

Basic Information

Item	Detail
Product Name	Oxygen-18O2
CAS No.	32767-18-3
Molecular Formula	18O2
Molecular Weight	36.00 g/mol
Synonyms	Oxygen-18 gas; [18O]Oxygen; Diisotopic oxygen (18O2); Oxygen-18 labeled molecular oxygen; Stable isotope oxygen-18; Heavy oxygen gas; 18O2; Oxygen, isotope of mass 18
EINECS	Contact for details

Quality Control

Our Oxygen-18O2 is produced and handled under stringent conditions to ensure isotopic and chemical purity for research integrity. Each batch is analyzed to confirm key parameters, including isotopic enrichment and gas purity. Certificates of Analysis (COA) detailing isotopic abundance (e.g., 95-99+ atom % 18O), purity levels, and verification of the absence of key contaminants are provided. We adhere to rigorous internal quality standards to support reproducible and reliable scientific outcomes.

Storage

Preserve in a tightly closed, approved specialty gas cylinder or container, protected from light. Store in a cool, well-ventilated area away from direct heat sources and incompatible materials. As a strong oxidizer, ensure cylinders are secured and stored separately from flammable and combustible substances. Keep container valves tightly closed when not in use.

Specification

Item	Specification
Appearance	Colorless Gas
Isotopic Enrichment (Atom % 18O)	95% min. (Custom grades available)
Chemical Purity (O2)	≥ 99.0%
Identification (IR / MS)	Conforms
Major Isotopic Impurities (16O2, 16O18O)	Specified per grade
Other Gas Impurities (N2, Ar, CO2)	< 1.0% total

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.