Product Overview
High Purity Hydrogen,Hydrogen standard gas is a critical industrial gas characterized by extremely low levels of impurities, specifically tailored for applications where contamination from other gases would compromise performance or safety. Sourced primarily through steam methane reforming or electrolysis and refined to exacting standards, high purity hydrogen is essential in electronics manufacturing, chemical synthesis, and emerging clean energy technologies. The reliable supply of high purity hydrogen ensures optimal efficiency and safety in processes ranging from semiconductor fabrication to fuel cell operation.
Basic Information
| CAS No. | 1333-74-0 |
| UN No. | UN1049 (Hydrogen, compressed) or UN1966 (Hydrogen, refrigerated liquid) |
| Molecular Formula | H₂ |
| Hazard Classification | 2.1 (Flammable gas) |
Key Attributes & Parameters
| Purity Grades | Available in grades including 99.99% (4.0), 99.999% (5.0), 99.9995% (5.5), and up to 99.9999% (6.0) and higher for ultra-sensitive uses. |
| Key Impurity Specifications (for 99.999% Grade) |
Oxygen (O₂): < 1 ppmv Moisture (H₂O): < 2 ppmv Total Hydrocarbons (THC): < 0.5 ppmv (as CH₄) Nitrogen (N₂): < 3 ppmv Carbon Monoxide (CO): < 0.1 ppmv Carbon Dioxide (CO₂): < 0.1 ppmv |
| Physical State | Colorless, odorless, highly flammable gas; also supplied as a cryogenic liquid for bulk delivery. |
| Delivery Forms | High-pressure cylinders, tube trailers, or on-site generation systems with integrated purification. |
Features & Advantages
Ultra-Low Contamination
Essential for processes where trace oxygen, moisture, or hydrocarbons can cause defects, oxidation, or catalyst poisoning, ensuring high yield and product quality.
Versatile Reducing Atmosphere
Provides an effective reducing environment in metallurgy and materials processing, preventing oxidation and enabling precise thermal treatments.
Critical for Energy and Electronics
Serves as both a fundamental feedstock in electronics manufacturing and a clean energy carrier for fuel cells, supporting technological advancement and decarbonization.
Consistent and Reliable Supply
Guaranteed purity and stable supply chains are vital for continuous operation in semiconductor fabs, chemical plants, and research facilities.
Functional Characteristics
Hydrogen standard gas functions primarily as a reducing agent, carrier gas, or fuel. In semiconductor manufacturing, it is used in annealing, epitaxial growth, and as a forming gas (mixed with nitrogen) to prevent oxidation. Its high thermal conductivity and low density make it an efficient cooling medium in large generators. In fuel cells, it electrochemically combines with oxygen to produce electricity and water. For chemical processes, it participates in hydrogenation, hydrocracking, and desulfurization reactions. Specialized storage, handling, and purification technologies are employed to maintain its purity from point of generation to point of use.
Primary Application Fields
Semiconductor and Electronics
Used in wafer fabrication for reducing atmospheres, epitaxy, and as a carrier gas in chemical vapor deposition (CVD) and etching processes.
Chemical and Petrochemical Industries
Key reactant in hydrocracking, hydrodesulfurization, and the production of ammonia, methanol, and other bulk chemicals.
Metallurgy and Heat Treatment
Provides protective atmospheres for annealing, sintering, and brazing of metals to prevent oxidation and decarburization.
Fuel Cells and Clean Energy
Pure fuel for proton exchange membrane (PEM) fuel cells in stationary power, transportation, and portable devices.
Analytical and Laboratory Applications
Carrier gas for gas chromatography (GC) and fuel for flame ionization detectors (FID).
Float Glass Manufacturing
Creates a reducing atmosphere to prevent oxidation of the tin bath in the glass production process.
Customer Collaboration Case
A leading manufacturer of advanced semiconductor chips for 5G devices encountered persistent oxide layer inconsistencies during a critical annealing step, impacting transistor performance and yield. They suspected trace oxygen in their process gas was the culprit. We partnered to deploy a dedicated supply of 99.9999% high purity hydrogen, integrated with a point-of-use purifier to guarantee oxygen levels below 10 ppb at the tool inlet. Additionally, we implemented a real-time moisture and oxygen monitoring system. The ultra-dry, oxygen-free environment created by our high purity hydrogen eliminated the oxidation issue, resulting in a 30% improvement in wafer yield for the affected process layer and enhanced device reliability. This collaboration not only resolved a critical production bottleneck but also established a new standard for gas purity in their fab, demonstrating how Hydrogen standard gas is a direct enabler of cutting-edge semiconductor manufacturing.
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