Nitrogen

BUY LIQUID NITROGEN OR PURCHASE COMPRESSED NITROGEN GAS (N2)

We offer compressed nitrogen gas and liquid nitrogen (N2) in a variety of purities and concentrations. See the chart below and download MSDSs for more information on buying liquid nitrogen and nitrogen gas from Praxair.

PRODUCT NAME CONCENTRATION MSDS
Compressed Nitrogen Gas (N2) High Purity > 99.9999%
Low Purity > 90%
Nitrogen Medipure Extendapak Gas N2 Safety Data Sheet SDS P4631
Refrigerated Liquid Nitrogen (N2) > 99.998% Liquid Nitrogen Medipure Gas N2 Safety Data Sheet SDS P4630
Nitrogen Gas Argon Mixture 1 ppm – 99.99%  
Nitrogen Gas Helium Mixture 1 ppm – 99.99%  
Nitrogen Gas Hydrogen Mixture 1 ppm – 99.99%  
Nitrogen Gas Oxygen Mixture 1 ppm – 99.99%  

At Praxair, we develop the right grades for the right applications. Give us a call and we'll help you determine the best supply option for your operations.

USES AND APPLICATIONS OF NITROGEN GAS AND LIQUID NITROGEN BY INDUSTRY

Aerospace & Aircraft

Essential to the aerospace & aircraft industry, nitrogen is used in high Reynolds number wind tunnels, heat treating furnaces and autoclaves to help create incredibly strong but lightweight materials. Nitrogen is also used as an assist gas for laser cutting applications.

Autoclave Inerting
Heat Treating

Automotive & Transportation Equipment

Assembly plants, tier 1s and tier 2s use nitrogen in combination with other welding gases to weld auto parts, frames, mufflers and other components because of its ability to provide the necessary atmosphere needed to produce adequate welds with any material. It’s also an important safety component in airbags.

Heat Treating
Parts Manufacturing

Chemicals

Used as a pressurizing gas, nitrogen can help propel liquids through pipelines. It is also used to shield oxygen-sensitive materials from the air and to remove volatile organic chemicals from process streams.

Inerting
Nitrogen Stripping & Recovery
Reactor Cooling
VOC Treatment & Recovery

Energy

As an inert industrial gas, nitrogen is used as a blanketing agent to separate sensitive products and processes from air. It is also used as a purging agent in piping and equipment to prevent contamination.

Nitrogen Stripping & Recovery
VOC Treatment & Recovery

Food & Beverage

Nitrogen is a key cryogenic agent in cooling, chilling and food freezing. Because of its extremely cold temperatures, immersion freezing in liquid nitrogen is the fastest freezing method known for producing Individually Quick Frozen (IQF) foods. Nitrogen also plays a key role in reducing spoilage, discoloration and off–flavors, giving strength to retail packaging.

Freezing & Chilling 
Flour & Dough Cooling
Meat Mixing
Modified Atmosphere Packaging

Healthcare

Nitrogen NF is used as a cryogen to freeze and preserve blood, tissue, and other biological specimens, and to freeze and destroy diseased tissue in cryosurgery and dermatology. It is also used to power medical devices.

Medical Laboratory
Minimally Invasive Cryotherapy
Tissue Transport & Blood Platelet Preservation

Metal Production

A carrier and purge gas in steel production, nitrogen is used to prevent oxidation and is a key component in the heat-treating process.

Heat Treating
Inerting

Oil & Gas

The oil and natural gas industry utilizes nitrogen to increase reservoir reserves and fracture hydrocarbon-bearing formations to significantly increase the production of oil and gas, and to improve operating efficiency.

Enhanced Oil Recovery
Well Hydraulic Fracturing

Pharmaceutical & Biotechnology

Gaseous nitrogen is commonly used for purging, pressure transferring, mixing and blanketing — protecting a process from moisture intrusion, oxidation, degradation and contamination. Cryogenic liquid nitrogen is used to control the temperature in reactor cooling applications and to preserve biological samples.

Reactor Cooling 
Lyophilization
ControLyo™ Nucleation on Demand
VOC Treatment & Recovery

Refining

An industrial gas used to blanket storage tanks and purge pipelines, nitrogen can also strip Volatile Organic Compounds (VOCs) from chemical process streams and wastewater, and reduce VOC emissions.

VOC Treatment & Recovery

Welding & Metal Fabrication

In stainless steel tube welding, nitrogen is used as a purge gas. It is also used as an assist gas for laser cutting, and enhances plasma cutting.

Cutting Processes
Welding Processes

Explore other industries that use this gas.

Diving
Electronics
Glass
Laboratories

LIQUID NITROGEN & NITROGEN GAS (N2) SUPPLY: TANKS, DEWAR FLASKS, CONTAINERS & CYLINDERS

Cylinders & Liquid Containers

For smaller, more specialized applications, we offer nitrogen in high-pressure gas cylinders or liquid nitrogen dewars in a variety of sizes.

Bulk & Minibulk Delivery

Our bulk gas and liquid delivery systems offer a full range of purities and nitrogen tank sizes, for your supply needs. We also offer Microbulk gas delivery as an alternative to cylinders.

On-Site Production

If you require very large volumes of high-purity liquid nitrogen or nitrogen gas our on-site cryogenic air separation plants are a viable supply source for you. Praxair non-cryogenic nitrogen plants offer a range of product purities, 90% and higher, over a wide range of volumes. Our plants are efficient, reliable and cost-effective at any required pressure and purity level.

Pipeline

Our pipeline supply systems offer flexibility, economy and extraordinarily reliable supply for customers who consume very large volumes of nitrogen gas each day.

Not sure what’s right for you?

At Praxair, our scale and reach lets us supply any gas, for any application, almost anywhere in the world — safely, reliably and cost-effectively. Give us a call and we'll help you determine the best supply option for your operations.