Description

Deuterium Oxide CAS NO 7789-20-0, commonly known as heavy water, is a stable, non-radioactive isotopic form of water where the hydrogen atoms are replaced by deuterium (²H or D). This compound is a critical material in numerous scientific and industrial fields due to its unique nuclear and physicochemical properties. It is an essential solvent and moderator in nuclear magnetic resonance (NMR) spectroscopy and nuclear reactors, and is widely used in pharmaceutical research, chemical synthesis, and metabolic studies.

Application

• NMR Spectroscopy: As a primary solvent for analyzing hydrogen-containing compounds, providing a non-interfering deuterium lock signal.
• Nuclear Industry: Serving as a neutron moderator and coolant in certain types of nuclear reactors, such as CANDU reactors.
• Pharmaceutical & Life Sciences: Used in metabolic studies (tracer experiments), the production of deuterated drugs, and as a stabilizing agent for active pharmaceutical ingredients (APIs).
• Chemical Synthesis: As a reagent for introducing deuterium atoms into organic molecules to create labeled compounds for research and analysis.
• Fourier Transform Infrared (FTIR) Spectroscopy: For solvent background subtraction and sample preparation in infrared analysis.
• Calibration Standards: Used in analytical laboratories to calibrate instruments and validate methods.
• Electrolyte & Battery Research: Investigated for its effects on electrochemical processes in advanced battery systems.
• Optical Fiber Manufacturing: Employed in chemical vapor deposition processes to produce low-loss glass fibers.

Basic Information

Product Name	Deuterium Oxide
CAS No.	7789-20-0
Molecular Formula	D₂O
Molecular Weight	20.03 g/mol
Synonyms	Heavy Water; Deuterium Oxide; Water-d2; Dideuterium Oxide; Deuterated Water; ²H₂O; Heavy Oxygen Water; Deutenyl Oxide
EINECS	232-148-9

Quality Control

Our Deuterium Oxide is produced and tested under stringent quality management systems. We offer various grades, including high-purity NMR and analytical grades, with specifications for isotopic enrichment (D atom %), conductivity, and trace impurity levels. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, isotopic purity, UV absorbance, and tests for foreign ions. Our quality commitment ensures reliability for your most sensitive applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Due to its hygroscopic nature, containers must be kept tightly sealed to prevent absorption of atmospheric moisture (H₂O), which can dilute isotopic purity. For long-term storage of high-purity grades, consider storage under an inert atmosphere.

Specification

Item	Specification
Appearance	Colorless Clear Liquid
Identification (IR)	Conforms
Deuterium Content (D atom %)	≥ 99.8%
Assay (D₂O by NMR)	≥ 99.9%
Conductivity	≤ 2 μS/cm
UV Absorbance (at 260 nm)	≤ 0.05
Isotopic Purity (by Mass Spec)	Contact for details
Foreign Ions (Chloride, Sulfate)	Passes test

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