Description

Potassium Nitrate (18O3, 90%+) is a high-purity, isotopically labeled inorganic salt, distinguished by its enrichment with the stable oxygen-18 isotope. This compound is critical for research and development applications where precise isotopic tracing is required, offering a reliable source of the 18O label. It is primarily utilized by analytical laboratories, research institutions, and specialized chemical manufacturers in the fields of environmental science, metabolic studies, and advanced material synthesis.

Application

• Isotopic Tracer Studies: Used as a source of the 18O label in environmental research to track oxygen atom pathways in chemical and biological systems.
• Metabolic Research: Employed in life sciences for investigating metabolic pathways and reaction mechanisms through stable isotope labeling techniques.
• Analytical Reference Standard: Serves as a certified reference material (CRM) or internal standard in mass spectrometry (MS) and nuclear magnetic resonance (NMR) spectroscopy.
• Advanced Material Synthesis: Utilized in the development of novel materials where isotopic purity can influence physical properties or reaction kinetics.
• Geochemical Dating & Analysis: Applied in earth sciences for isotopic analysis in paleoclimatology and mineral formation studies.

Basic Information

Product Name	Potassium Nitrate (18O3, 90%+)
CAS No.	191354-71-9
Molecular Formula	K18NO3
Molecular Weight	~105.10 g/mol (18O enriched)
Synonyms	Potassium Nitrate-18O3; 18O-Labeled Potassium Nitrate; Nitric-18O3 Acid, Potassium Salt; Saltpeter-18O3; Niter-18O3; KNO3-18O3; KN-18O3; Labeled Potassium Nitrate
EINECS	Contact for details

Quality Control

Our Potassium Nitrate (18O3, 90%+) is produced and tested under stringent quality management protocols. Each batch is characterized to confirm isotopic enrichment (18O atom %), chemical purity, and identity. A comprehensive Certificate of Analysis (COA) is provided, detailing results from techniques such as Isotope Ratio Mass Spectrometry (IRMS), titration, and spectroscopy to ensure compliance with your research specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and a strong oxidizer; keep the container tightly sealed and separate from combustible materials, reducing agents, and strong acids.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Isotopic Enrichment (18O)	≥ 90 atom %
Assay (Titration)	≥ 98.0% (on anhydrous basis)
Water Content (KF)	≤ 1.0%
pH (5% solution)	5.0 - 8.0
Chloride (Cl)	≤ 0.01%
Sulfate (SO4)	≤ 0.02%

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