Helium-3He
Helium-3 (CAS 14762-55-1), with the formula <sup>3</sup>He and a molecular weight of 3.02 g/mol, is a stable, non-radioactive isotope of helium. This exceptionally pure gas is a critical component in advanced scientific research and specialised industrial applications. Its unique nuclear properties make it indispensable for neutron detection, nuclear magnetic resonance (NMR) spectroscopy, and as a tracer gas in advanced materials research and electronic manufacturing processes.
Neutron Detection
Helium-3 is widely used in gas proportional counters for detecting neutrons due to its high neutron capture cross-section. This is crucial for nuclear security, research reactors, and scientific instrumentation.
Nuclear Magnetic Resonance (NMR)
In specialised NMR applications, Helium-3 can be polarised for use in magnetic resonance imaging (MRI) and spectroscopy, particularly for studying lung function and materials.
Semiconductor Manufacturing
High-purity Helium-3 serves as a crucial gas in the fabrication of microelectronics and semiconductors, contributing to plasma etching and thin-film deposition processes.
Materials Science Research
Its isotopic properties are leveraged in advanced materials science for studying diffusion, defects, and other phenomena at the atomic level.
| Molecular weight | 3.02 |
|---|---|
| Linear formula | 3He |
| Assay | 99.999% (CP) |
Hazard statements
- H280Contains gas under pressure; may explode if heated
Precautionary statements
- P410Protect from sunlight
| Protective equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Transport (UN / ADR) | UN 1046 2.2 |
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Isotopic Purity | 99.95 atom % |
|---|---|
| Mass Shift | M-1 |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Helium-3 used for?
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Helium-3 is used in neutron detection, specialised NMR spectroscopy, semiconductor manufacturing, and advanced materials science research.
What is the CAS number and formula for Helium-3?
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The CAS number for Helium-3 is 14762-55-1, and its formula is <sup>3</sup>He.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Helium-3 with an assay of 99.999% (CP) and an isotopic purity of 99.95 atom %. We do not represent this product as USP, BP, or EP grade.
How should Helium-3 be handled safely?
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Helium-3 is supplied under pressure and is a gas under pressure (H280). Handle with appropriate personal protective equipment including eyeshields, gloves, and a suitable respirator. Store and handle in accordance with P410 + P403.
Is Helium-3 a controlled substance?
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Based on the provided data, Helium-3 is not indicated as a controlled substance.
How is Helium-3 packed and shipped?
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Helium-3 is shipped as UN 1046, Class 2.2. Please contact us for specific packing and export details.
How can I request a quote or sample for Helium-3?
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To request a quote or sample for Helium-3, please contact our sales team via the website or provide your details through our standard enquiry form.
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