Your Professional Standard Gas Manufacturer!
Heze Dongjian Chemical Co., Ltd. is a leading technology enterprise specializing in specialty gases and refrigerants, integrating R&D, production, storage, packaging, transportation, sales and technical services. Its business covers the entire industrial chain of hazardous chemicals. With advanced production technology, strict quality management systems, and scalable manufacturing capability, we are committed to providing stable quality products and reliable bulk supply solutions for global distributors, brand owners, contract manufacturers, and formulation companies.
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![High-purity Oxygen]()
High-purity OxygenHigh-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 -
![High-Purity Nitrogen]()
High-Purity NitrogenHigh-Purity Nitrogen is an inert, non-reactive gas essential for industries where even trace impurities can compromise product integrity, process stability, or analytical accuracy. Obtained through -
![High-Purity Argon]()
High-Purity ArgonHigh-Purity Argon is an inert noble gas essential for advanced manufacturing, scientific research, and high-technology applications where atmospheric contamination must be eliminated. Extracted and -
![Helium Standard Gas]()
Helium Standard GasHelium standard gas is a certified, precise gas mixture containing a known and stable concentration of helium (He) in a specified balance gas, typically nitrogen, air, or argon. It serves as a -
![Hydrogen Standard Gas]()
Hydrogen Standard GasHigh 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 -
![Carbon Dioxide Standard Gas]()
Carbon Dioxide Standard GasHigh Purity Carbon Dioxide,Carbon dioxide standard gas is a specialized grade of CO₂ characterized by extremely low levels of impurities, tailored for applications where standard industrial or -
![Carbon Monoxide Standard Gas]()
Carbon Monoxide Standard GasHigh Purity Carbon Monoxide,carbon monoxide standard gas is a specialized, toxic, and flammable gas refined to contain minimal levels of impurities that could interfere with sensitive chemical -
![Sulfur Hexafluoride Gas]()
Sulfur Hexafluoride GasSulfur Hexafluoride (SF₆) Gas is a synthetic, inorganic, colorless, odorless, non-toxic, and non-flammable gas renowned as the most effective dielectric and insulating medium commercially available.
Why Choose Us
Modern Manufacturing Base & Strong Production Capacity
Our production base is located in Minquan County, Henan Province, covering 20,000㎡ and equipped with modern office buildings, R&D facilities, and advanced production workshops, ensuring stable large-scale manufacturing capability.
Advanced Production Equipment
We are equipped with multiple large-scale storage tanks, industrial gas systems, ton containers, automated filling lines, and semi-automatic production equipment, enabling efficient, precise, and consistent product manufacturing.
Certified Quality Management System
We have obtained international market access qualifications and safety certifications such as ISO, ensuring that our production and quality control systems meet global regulatory and industry standards.
Global Export Experience & Full-Service Support
Our products are exported to the Middle East and Southeast Asia, earning strong customer trust. We provide full-service support including pre-sales consultation, in-process order tracking, and reliable after-sales service to ensure customer satisfaction.
Types of Standard Gas
The Standard Gas produced by our company mainly include the following types:
High-purity Oxygen
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.
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CAS No. |
7782-44-7 |
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UN No. |
UN1072 (Oxygen, compressed) or UN1073 (Oxygen, refrigerated liquid) |
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Molecular Formula |
O₂ |
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Hazard Classification |
2.2 (Non-flammable, oxidizing gas) |
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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. |
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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 |
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Physical State |
Colorless, odorless, tasteless gas; also supplied as a cryogenic liquid (LOX) for bulk delivery. |
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Delivery & Packaging |
Available in high-pressure cylinders, cylinder bundles, tube trailers, or as bulk liquid in cryogenic tanks. |
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.
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.
High-Purity Nitrogen
High-Purity Nitrogen is an inert, non-reactive gas essential for industries where even trace impurities can compromise product integrity, process stability, or analytical accuracy. Obtained through advanced air separation and purification technologies, this gas is characterized by extremely low levels of oxygen, moisture, hydrocarbons, and other contaminants. As the ultimate protective and purging medium, high purity nitrogen is indispensable for preventing oxidation, contamination, and unwanted chemical reactions in sensitive environments.
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CAS No. |
7727-37-9 |
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UN No. |
UN1066 (Nitrogen, compressed) or UN1977 (Nitrogen, refrigerated liquid) |
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Molecular Formula |
N₂ |
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Hazard Classification |
2.2 (Non-flammable, non-toxic gas) – primarily an asphyxiant in confined spaces. |
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Purity |
Available in standardized grades |
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Critical Impurity Specifications (for 99.999% Grade) |
Oxygen (O₂): < 3 ppmv Moisture (H₂O): < 3 ppmv (often <1 ppmv for advanced applications) Total Hydrocarbons (THC): < 0.5 ppmv (as CH₄) Carbon Dioxide (CO₂): < 1 ppmv Particulates: Filtered to 0.01 μm or better. |
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Physical State |
Colorless, odorless, tasteless gas; supplied as a compressed gas or a cryogenic liquid for bulk efficiency. |
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Dew Point |
Can reach -76°C or lower, indicating extreme dryness. |
Advantages of High-Purity Nitrogen
Ultra-Inert & Dry Atmosphere
Provides an environment virtually free of oxygen and moisture, crucial for protecting sensitive materials from oxidation, hydrolysis, and degradation.
Superior Contamination Control
Extremely low levels of hydrocarbons and particles prevent surface contamination, film defects, and catalyst poisoning in high-tech manufacturing.
Consistent Process Performance
Guaranteed purity ensures repeatable results in critical processes like semiconductor doping, heat treating, and pharmaceutical packaging, enhancing yield and quality.
Versatile and Safe
As a non-flammable, non-reactive gas, it is safe for a wide range of applications, from blanketing flammable chemicals to purging pipelines and reactors.
Applications of High-Purity Nitrogen
Semiconductor & Electronics Manufacturing
Used in wafer fabrication for purging, blanketing, sputtering, and as a carrier gas. Critical for processes like chemical vapor deposition (CVD), etching, and annealing.
Pharmaceuticals & Biotechnology
Blanketing of oxygen-sensitive products, purging of reactors and filling lines, inerting for solvent recovery, and packaging to extend shelf-life (Modified Atmosphere Packaging - MAP).
Metals & Heat Treatment
Providing inert atmospheres for annealing, sintering, and brazing to prevent scaling and decarburization of high-value metals.
Analytical & Laboratory
Serves as a carrier gas in Gas Chromatography (GC), purge gas in Spectroscopy, and for instrument calibration.
Food & Beverage
Nitrogen flushing in packaging (e.g., for coffee, snacks) to prevent oxidation and spoilage.
Laser Cutting
Used as an assist gas for cutting non-ferrous metals like aluminum to achieve clean, oxide-free edges.
Packaging and Shipping
FAQ
As one of the most reliable standard gas manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to wholesale bulk standard gas for sale here from our factory. Thank you for your interest in our products.
Hydrogen Standard Gas, gas standard, High Purity Nitrogen