Description

(3He)Helium CAS NO 14762-55-1 is the rare, stable isotope of helium-3, a non-radioactive, inert gas with unique nuclear properties. This high-purity specialty gas is critical for advanced scientific and industrial applications where standard helium-4 is insufficient. It is essential for researchers and engineers in the fields of cryogenics, fundamental physics, and national security.

Application

• Ultra-Low Temperature Cryogenics: Primary coolant for dilution refrigerators to achieve temperatures in the millikelvin range for quantum computing and condensed matter physics research.
• Neutron Detection & Nuclear Safeguards: Used as the filling gas in neutron detectors for nuclear non-proliferation monitoring, reactor safety, and border security due to its high neutron absorption cross-section.
• Medical Imaging (Hyperpolarized MRI): Serves as a substrate for creating hyperpolarized noble gases, enabling groundbreaking lung and brain imaging with significantly enhanced signal-to-noise ratios.
• Fundamental Physics Research: Crucial for experiments in nuclear magnetic resonance (NMR), studies of superfluidity, and searches for exotic particles like dark matter.
• National Security & Defense: Employed in radiation portal monitors and specialized detection systems for identifying special nuclear materials.
• Geochemical & Oceanographic Tracer: Used to study ocean circulation, mantle degassing, and groundwater flow due to its primordial origin and low atmospheric abundance.

Basic Information

Product Name	(3He)Helium
CAS No.	14762-55-1
Molecular Formula	³He
Molecular Weight	3.016 g/mol
Synonyms	Helium-3; ³Helium; He-3; Helium, isotope of mass 3; Light helium; Rare helium isotope; Tritiogenic helium; Stable helium isotope
EINECS	Contact for details

Quality Control

Our helium-3 is produced and purified to meet the exacting standards required for sensitive research and detection applications. Each batch undergoes rigorous analysis using advanced techniques like gas chromatography and mass spectrometry to verify isotopic purity and the absence of key contaminants. A comprehensive Certificate of Analysis (COA) detailing isotopic abundance, chemical purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a well-ventilated area at room temperature (15-25°C). Due to its highly volatile and gaseous nature, cylinders must be secured upright and handled with appropriate pressure-regulating equipment. Keep away from heat, sparks, open flames, and hot surfaces.

Specification

Item	Specification
Appearance	Colorless Gas
Isotopic Purity (³He)	≥ 99.9%
Chemical Purity (He)	≥ 99.999%
⁴He Content	≤ 0.1%
Neon (Ne)	≤ 5 ppm
Hydrogen (H₂)	≤ 1 ppm
Nitrogen (N₂)	≤ 1 ppm
Oxygen (O₂)	≤ 0.5 ppm
Moisture (H₂O)	≤ 1 ppm
Hydrocarbons (as CH₄)	≤ 0.5 ppm
Identification (GC/MS)	Conforms

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