Product Overview
High-purity oxygen is a vital industrial and specialty gas, characterized by its extremely low levels of impurities to meet the stringent requirements of advanced manufacturing, electronics, and scientific research. Unlike standard industrial oxygen, high purity oxygen undergoes additional purification processes to remove trace contaminants such as moisture, hydrocarbons, nitrogen, and noble gases. This exceptional purity is essential for applications where even minute impurities can compromise product quality, process efficiency, or experimental integrity. The reliable supply of high purity oxygen is foundational to innovation in high-technology sectors and critical healthcare.
Basic Information
| CAS No. | 7782-44-7 |
| UN No. | UN1072 (Oxygen, compressed) or UN1073 (Oxygen, refrigerated liquid) |
| Molecular Formula | O₂ |
| Hazard Classification | 2.2 (Non-flammable, oxidizing gas) |
Key Attributes & Parameters
| Purity | Available in grades such as 99.5% (Grade 3.0), 99.9% (Grade 4.0), 99.995% (Grade 4.5), and up to 99.9999% (Grade 6.0) and beyond for specific uses. |
| Key Impurity Specifications |
Moisture (H₂O): As low as <0.5 ppmv (for 6.0 grade) Total Hydrocarbons (THC): As low as <0.1 ppmv (as CH₄) Nitrogen (N₂): <5 ppmv Argon (Ar): <1 ppmv Carbon Dioxide (CO₂): <0.1 ppmv |
| Physical State | Colorless, odorless, tasteless gas; also supplied as a cryogenic liquid (LOX) for bulk delivery. |
| Delivery & Packaging | Available in high-pressure cylinders, cylinder bundles, tube trailers, or as bulk liquid in cryogenic tanks. |
Features & Advantages
Ultra-Low Contaminant Levels
Rigorous purification ensures minimal trace gases, moisture, and particulate matter, preventing contamination in sensitive processes.
Enhanced Process Control & Yield
Consistent, high-purity oxygen enables precise oxidation, combustion, or synthesis reactions, leading to superior product quality, higher yields, and reduced defects in semiconductor and glass manufacturing.
Critical for Advanced Technologies
Essential for processes where standard oxygen purity is insufficient, such as fiber optics preform synthesis, high-efficiency solar cell production, and advanced metallurgy.
Superior Safety & Consistency
Meets or exceeds international standards (e.g., ISO, SEMI), ensuring process reliability and safety, particularly in oxidation environments.
Functional Characteristics
High-purity oxygen functions as an ultra-clean oxidizing agent, reactant, or process gas. In semiconductor fabrication, it is used in thermal oxidation to grow uniform silicon dioxide layers and in chemical vapor deposition (CVD) and plasma etching. In these roles, impurities can create crystal defects or alter reaction kinetics. As a breathable gas in specialized medical and life-support applications, its purity is critical for patient safety. It is produced via cryogenic air separation followed by additional purification steps like catalytic oxidation of hydrocarbons, adsorption, and filtration.
Primary Application Fields
Semiconductor & Electronics Manufacturing
Thermal oxidation, chemical vapor deposition (CVD), plasma etching, and ashing in chip fabrication. Critical for DRAM, logic devices, and MEMS production.
Fiber Optics & Specialty Glass
Synthesis of ultra-pure silica glass preforms for optical fibers and production of high-quality display glass (e.g., for LCD/OLED panels).
Pharmaceutical & Biotechnology
Fermentation processes, cell culture, and as a raw material in synthesis under stringent Good Manufacturing Practice (GMP) conditions.
Advanced Materials & Research
Production of superconductors, precision welding of reactive metals (e.g., titanium), and use in analytical instruments and controlled atmosphere research.
Specialized Healthcare
Laser surgery, hyperbaric medicine, and advanced life support systems where gas purity is paramount.
Customer Collaboration Case
A leading manufacturer of advanced photovoltaic cells for space applications faced a critical challenge. Their process for depositing a key transparent conductive oxide layer required a highly controlled oxidation environment. Trace moisture and hydrocarbon impurities in their standard oxygen supply were causing inconsistencies in layer density and optical properties, reducing cell efficiency. We partnered with them to implement a dedicated supply of Grade 5.5 high purity oxygen (99.9995% pure, with THC <0.1 ppm and H₂O <0.5 ppm). We installed a point-of-use purifier and a closed-loop monitoring system to guarantee purity at the tool inlet. The switch to our high purity oxygen resulted in a dramatic improvement. The deposited films showed 40% fewer defects and a 15% increase in consistent light transmittance. This enhancement directly translated to a measurable increase in the power conversion efficiency and long-term reliability of their solar cells, securing a crucial contract for a major satellite program. This success underscored how our high purity oxygen was not just a utility but an enabling material for cutting-edge performance.
Hot Tags: high-purity oxygen, China high-purity oxygen manufacturers, suppliers, factory, Carbon Dioxide Standard Gas, High Purity Argon, High Purity Nitrogen, High purity Oxygen, Hydrogen Standard Gas, standard gas
