Liquid Oxygen

    • Product Name: Liquid Oxygen
    • Chemical Name (IUPAC): Dioxygen
    • CAS No.: 7782-44-7
    • Chemical Formula: O2
    • Form/Physical State: Cryogenic Liquid
    • Factroy Site: No.1 Hengli Road Economic Development Zone of Nanma ShengzeTown,Wujiang District
    • Price Inquiry: sales3@ascent-petrochem.com
    • Manufacturer: Hengli Petrochemical Co., Ltd.
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    Specifications

    HS Code

    862230

    Chemical Formula O2
    Cas Number 7782-44-7
    Molecular Weight 32.00 g/mol
    Appearance Pale blue liquid
    Boiling Point -183°C (−297°F)
    Melting Point -218.8°C (−361.8°F)
    Density 1.141 g/cm³ at boiling point
    Odor Odorless
    Solubility In Water Slightly soluble
    Oxidizing Properties Strong oxidizer
    Vapor Pressure 1 atm at −183°C
    Flammability Non-flammable, supports combustion
    Critical Temperature -118.6°C
    Critical Pressure 49.8 atm
    Color Light blue

    As an accredited Liquid Oxygen factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Application of Liquid Oxygen

    Purity 99.5%: Liquid Oxygen with purity 99.5% is used in steel manufacturing, where it increases combustion efficiency and accelerates oxidation reactions.

    Cryogenic Temperature -183°C: Liquid Oxygen at cryogenic temperature -183°C is used in rocket propulsion, where it enhances fuel efficiency and thrust output.

    Stability Temperature -185°C: Liquid Oxygen with stability temperature -185°C is used in medical oxygen supply units, where it ensures safe and stable oxygen delivery under low-temperature conditions.

    Density 1.141 g/cm³: Liquid Oxygen with density 1.141 g/cm³ is used in wastewater treatment, where it improves aeration and accelerates biochemical oxygen demand (BOD) reduction.

    Particle Size <1 micron: Liquid Oxygen with particle size <1 micron is used in laboratory-scale oxidation experiments, where it provides uniform reactivity and controlled oxidant dispersion.

    Impurity Level <10 ppm: Liquid Oxygen with impurity level below 10 ppm is used in electronics component manufacturing, where it enables high-purity oxidation and lowers defect rates.

    Packing & Storage
    Packing The 50-liter Liquid Oxygen is packaged in a high-pressure, insulated stainless steel cylinder, clearly labeled with hazard warnings and UN 1073.
    Container Loading (20′ FCL) Container Loading (20′ FCL) for Liquid Oxygen involves safe, pressurized storage and transport in 20-foot containers, ensuring secure handling and compliance with safety regulations.
    Shipping Liquid oxygen is shipped in specially designed, insulated cryogenic containers to maintain temperatures below -183°C. Cylinders or tank trucks are clearly labeled with UN1073 and appropriate hazard warnings. Shipping requires compliance with strict safety regulations due to its strong oxidizing properties and potential hazards, including risk of rapid combustion and explosion.
    Storage Liquid oxygen is stored in specialized, insulated, and pressure-rated cryogenic tanks made from materials such as stainless steel or aluminum. These tanks maintain extremely low temperatures (below −183°C) to keep oxygen in liquid form and prevent evaporation. Safety features, including pressure relief valves and secure venting systems, are essential to manage pressure buildup and minimize risks of leaks or explosions.
    Shelf Life Liquid oxygen has no definitive shelf life; it evaporates over time, so it must be stored in well-insulated, sealed containers.
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    More Introduction

    Liquid Oxygen: An Industry Essential Straight from the Source

    A Closer Look at Liquid Oxygen

    Few products in our line carry the weight that liquid oxygen does, both in terms of its technical demands and its impact on the industries we serve. Around our plant, people do not just treat liquid oxygen as another commodity. Every batch demands precision, constant monitoring, and a true appreciation for its unique properties. At roughly -183°C, oxygen condenses into a pale blue liquid. Not many people realize that this low temperature preserves one of the most reactive elements on earth in a manageable state, ready for transport and application where high-purity oxygen gas simply won’t cut it.

    The Model and Specifications Backed by Real Practice

    We deliver liquid oxygen in two forms: bulk tanks and portable dewars. Each system presents its own handling quirks and operational boundaries, shaped by decades of direct factory experience. Bulk tanks—ranging anywhere from twenty tons right up to specialized capacities clocking in past one hundred tons—run piped supply into hospitals, steel mills, and fabrication shops. Dewars come into play for research labs, electronics producers, and specialty users who demand flexibility in storage.

    The oxygen we produce meets stringent purity requirements, with levels typically exceeding 99.5%. Our analytical team never relies on wishful thinking. Each tank gets sampled on-site before dispatch, guaranteeing that impurity levels for argon, nitrogen, and trace hydrocarbons stay below strict industry benchmarks. We don’t push out a single load without our own team’s signoff, because all our downstream partners, from aerospace to environmental tech, depend on every decimal point in our analyses.

    Uses That Make a Direct Impact

    Liquid oxygen runs deep in the veins of any intensive process. The steel industry, for instance, relies on rapid oxidation reactions to remove carbon and other impurities during the basic oxygen process. Our liquid flows directly into their converters, with flow control and supply pressure fine-tuned by engineers who understand the risks of even a brief lapse.

    Hospitals and emergency clinics demand a constant flow as backup to their compressed gas systems. For these customers, we’ve outfitted custom telemetry on site tanks. Real-time consumption metrics let our logistics division preemptively schedule tanker runs. We learned early that nobody wants a call at midnight about a dry tank, especially in a critical-care environment. The process industry, too, draws heavily on what we make. Chemical plants feed pure liquid oxygen into reactors to boost production rates, cut energy use, and drive more complete oxidation. In water treatment, our product neutralizes pollutants and supports powerful biochemical reactions. Direct feedback from engineers on the ground shapes how we package and supply the oxygen. The work doesn’t end once the tanker leaves our gates; customer support, troubleshooting, and flexibility in our supply chain matter just as much as actual product specs.

    Superiority Over Gaseous Oxygen and Technical Gases

    Many new entrants to the field ask what separates pure liquid oxygen from more common compressed oxygen gas. Drawing on our decades of practical experience, the answer is always the same: storage density, reliability, and total oxygen throughput. Liquid oxygen packs almost 860 times the volume of gaseous oxygen at atmospheric pressure. Any large facility burning through hundreds of kilograms per day quickly sees the safety and efficiency gains when handling liquid rather than juggling high-pressure cylinders.

    Handling liquid carries its own burdens—cryogenic gloves, ventilated storage, strict vent management. Yet those hurdles pale against the daily headaches of constantly refilling gas bottles. This speaks most clearly in field service operations. We’ve seen fabrication shops that once missed production targets due to gas shortages become top performers after installing properly sized liquid tanks. Emergencies become manageable, not existential crises.

    Comparisons also surface when looking at other technical gases. Liquid nitrogen might look the same in a dewar, but its use case splits from oxygen very quickly. Nitrogen acts as an inert blanketing agent; oxygen, by contrast, drives oxidation. Where precision oxidation, enhanced combustion, or medical-grade purity is non-negotiable, liquid oxygen earns its keep every day. We’ve seen makers try substituting technical oxygen with lower-purity alternatives, hoping to cut costs. The result almost always involves higher maintenance, shoddy yields, or unsafe conditions. Our team has helped many facilities recover from the fallout of quality shortcuts by restoring liquid oxygen supply and upgrading their onsite handling.

    Production: No Shortcuts, Only Rigor

    Producing liquid oxygen on an industrial scale is not just a matter of chilling air and calling it done. Our site draws on air separation units running through multiple cycles of compression, expansion, and rectification. Skilled technicians tune column pressures to optimize oxygen yield while stripping out water vapor, carbon dioxide, and any other traces that could destabilize the final liquid. We don’t outsource these steps. Every control station, repair, or upgrade happens under our own team’s oversight.

    Quality assurance starts long before the first drop of oxygen hits the storage tank. Pre-filtered intake air, perfectly balanced columns, and backup power all tie together into a single mission: prevent impurity build-up and maintain uninterrupted flow. Once the liquid reaches its final dewar or bulk tank, in-house staff repeat a multi-point sampling protocol. In our experience, trust grows not from certifications but from the track record of batches consistently passing third-party validation and, more importantly, performing reliably in our clients’ toughest applications.

    Storage and Handling: Lessons Learned on the Job

    Every plant visit or end-user audit brings up questions about safe handling of liquid oxygen. The hazards never get taken lightly. At these temperatures, organic materials can turn shock sensitive, common lubricants become dangerous, and poor ventilation risks oxygen enrichment in confined areas. Our teams train both in-house and at customer sites, reinforcing how leaks or careless transfer can escalate into serious incidents.

    Site-specific protocols matter. In one industrial park not far from our production base, a contractor once lost thousands of dollars in damaged pipework and hours to remedial cleaning after a routine transfer. Our follow-up involved hands-on retraining, not just handing over a manual. Since then, we have offered regular on-site seminars and short courses to bring both new and old partners up to our level of safety. Sharing lessons learned, even the hard ones, reduces near-misses and builds a culture where safety drives every step from filling to end use.

    We have also seen how proper venting systems cut down evaporative loss and protect tank integrity. In some older facilities, we consulted on retrofitting high-efficiency vacuum panels and pressure relief assemblies. These practical upgrades translated into steadier supply, fewer shutdowns, and lower product loss. By listening to customers’ field technicians and adapting best practices, we help keep liquid oxygen availability where it ought to be: predictable and secure.

    Meeting Evolving Demands Across Sectors

    Markets for liquid oxygen shift in response to changing technologies and regulations. In recent years, semiconductor manufacturing has demanded even higher purity oxygen for delicate oxidation and etching processes. We responded by overhauling part of our plant, installing new analytical systems to catch even sub-ppm impurities that would have been overlooked under previous standards.

    In power generation, combined-cycle plants reach for ultra-efficient combustion that only carefully metered liquid oxygen can provide. Here, our engineering teams work alongside plant operators to configure tank farms and supply lines, creating redundancy and adjusting logistics for changing consumption patterns. Remote monitoring, predictive servicing, and leaner supply cycles now form the backbone of relationships that once relied mainly on scheduled deliveries and manual checks.

    Environmental pressures also influence how we operate. Water treatment compliance has tightened, with stricter limits on discharge pollutants. We collaborate with process engineers to design oxygen-enriched systems that treat higher volumes of wastewater with minimal chemical additive use. The result is a direct, measurable drop in environmental impact, while keeping up with surging capacity needs from growing cities and industrial parks.

    Innovation Influenced by Real-World Requirements

    Advances in cryogenic technology, plant automation, and digital monitoring find their place in our operations, drawn by direct feedback from the market. We do not chase buzzwords. If a new pump style, heat exchanger, or telemetry package won’t stand up to real operational stresses, it won’t make it onto our supply line. Our R&D engineers run full trials, often with client operators onsite, to frame solutions that cut downtime or drive down maintenance costs.

    For instance, when our partners in the food and beverage sector pushed for more flexible dosing in their preservation tunnels, we engineered custom injection manifolds. Initial results showed reductions in product spoilage and improved energy use, giving processors a practical edge in competitive markets. Our willingness to modify, iterate, and deploy upgrades quickly rests on having full control of production from intake air to filled liquid tanks.

    The energy transition further underscores our approach. New hydrogen plants use liquid oxygen during electrolysis, leveraging its reactivity to produce green hydrogen more efficiently. As this sector matures, we will scale output, tailor supply patterns, and continue engineering for the next generation of clean energy solutions. Our long-standing relationships with plant builders and operators help bridge technical requirements with field-proven reliability.

    Our job is not simply to make liquid oxygen. It is to enable progress wherever pure, stable, and dependable oxygen is the unseen force at work. We stand fully behind every shipment because, over years, we have witnessed the tangible impact of quality and consistency, both in thriving businesses and in safer communities.

    Facing the Challenges Head-On

    Like most core materials, liquid oxygen comes with its own share of supply chain pressures and operational headaches. Rising energy costs, shipping disruptions, and evolving environmental compliance form a constant backdrop. We meet these challenges by tightening plant efficiency, investing in energy recovery, and optimizing delivery logistics. Our central location near major highway and rail corridors helps, as does our tradition of cross-training drivers and operators, so we have no weak links in our logistics chain.

    On the regulatory side, we never cut corners. Product recalls, environmental fines, and safety breaches do not just hit bottom lines—they destroy reputations and put lives at risk. Our regulatory compliance team keeps up with shifting local, national, and international standards, often advising other producers or helping industry bodies draft practical guidelines. This active participation in rule-making brings real-world experience directly to the table, benefiting not only our own operation but setting a higher standard for the industry at large.

    Training remains a focus. New employees do not just watch videos—they spend time in every part of the cycle, from the noise and cold of production to the final safety check before shipment. Mentoring, ongoing skill-upgrading, and periodic knowledge-sharing events embed our company culture into every team member. Our view: an educated workforce, empowered with up-to-date methods, delivers results customers can measure.

    Why We Stand Behind Our Product

    Over years, we have built a network of customers who return, not for price alone, but because our liquid oxygen does not surprise them—unless it’s with a faster delivery or a batch that performs above their toughest spec. We take pride in the fact that a growing range of industries has come to rely on us not just as a supplier, but as a partner ready to listen, troubleshoot, and innovate.

    What sets us apart from traders or resellers is full ownership of the process. We know the history of every tank, every batch, every ounce of product leaving our site. If a client finds an issue, we track it to the source—be it an upstream air filtration challenge, a valve failure, or a miscommunication on delivery. We do not rest until each concern is resolved. Some of our oldest clients started with a single test dewar and now run multi-million-dollar contracts across dozens of sites. That journey is built on trust, tested in tough times, and strengthened by a willingness to stand on what we know, not just what we say.

    In every operation, liquid oxygen remains more than a technical specialty. It is a force multiplier for progress—shaping steel, saving lives, and enabling new frontiers in science and clean energy. Our direct experience running the full cycle, from production to field application, keeps us rooted in reality. Challenges change, but our commitment to quality, adaptation, and honest partnership with our customers never does.