Welding High Purity N2 Gas

Basic Information
Place of Origin: China
Brand Name: Newradar Gas
Certification: ISO/DOT/GB
Model Number: N/A
Minimum Order Quantity: 50pcs
Price: negotiation
Packaging Details: Packed in10L-50L cylinder or packed according to the demands.
Delivery Time: 30-35 working days after received your payment
Payment Terms: L/C, , T/T, Western Union, MoneyGram
Supply Ability: 1000 pcs per month
Detail Information
CAS No.: 7727-37-9 EINECS No.: 231-783-9
Purity: 99.9999% Brand Name: Accept OEM
Package: Seamless Steel Cylinders Color: Colorless
Odor: Odorless Density: 1.25g/L
Place Of Origin: China Application: For Synthesis Ammonia
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Product Description

High Purity 99.9999% N2 Gas Packaged In 40L - 50L Cylinders Used in Welding




Nitrogen is a chemical element with symbol N and atomic number 7. The formula is N2.


Nitrogen occurs in all organisms, primarily in amino acids, in the nucleic acids and in the energy transfer molecule adenosine triphosphate. The human body contains about 3% by mass of nitrogen, the fourth most abundant element in the body after oxygen, carbon, and hydrogen. The nitrogen cycle describes movement of the element from the air, into the biosphere and organic compounds, then back into the atmosphere.


Nitrogen gas is an industrial gas produced by the fractional distillation of liquid air, or by mechanical means using gaseous air. Nitrogen gas generators using membranes or PSA are typically more cost and energy efficient than bulk delivered nitrogen.


Commercial nitrogen is often a byproduct of air-processing for industrial concentration of oxygen for steelmaking and other purposes. When supplied compressed in cylinders it is often called OFN (oxygen-free nitrogen).

In a chemical laboratory, it is prepared by treating an aqueous solution of ammonium chloride withsodium nitrite.


At atmospheric pressure, molecular nitrogen condenses at −195.79 °C and freezes at −210.01 °C into the beta hexagonal close-packed crystal allotropic form. Below −237.6 °C nitrogen assumes the cubic crystal allotropic form. Liquid nitrogen, a fluid resembling water in appearance, but with 80.8% of the density, is a common cryogen.


In general, nitrogen is unreactive at standard temperature and pressure. N2reacts spontaneously with few reagents, being resilient to acids and bases as well as oxidants and most reductants. When nitrogen reacts spontaneously with a reagent, the net transformation is often called nitrogen fixation.
Elemental lithium reacts in an atmosphere of N2 to give lithium nitride.




1. Physical properties


Commodity High purity nitrogen gas
Molecular Formula N2
UN No. UN1066
CAS No. 7727-37-9
Hazardous class for transort 2.2


2. Typical technical data (COA)


Nitrogen Gas





99.999% 99.9997% 99.9999%


Impurity Contents

O2 ≤3% ≤0.5% ≤0.2%
H2 ≤1% ≤1% ≤0.5%
H2O ≤5% ≤0.5% ≤0.2%
CO2 ≤3% ≤0.5% ≤0.1%
CO ≤3% ≤0.5% ≤0.5%
CH4 ≤3% ≤0.2% ≤0.1%


3. Package


Cylinder Size

Cylinder Content


Gauge Pressure


Outlet Connection


40ltr 5.4 135bar According to the valve type
50ltr 9.25 185bar According to the valve type
Other sizes are also available


Welding High Purity N2 Gas 0




As a modified atmosphere, pure or mixed with carbon dioxide, to nitrogenate and preserve the freshness of packaged or bulk foods


 In incandescent light bulbs as an inexpensive alternative to argon


 In fire suppression systems for Information technology equipment


In photolithography in deep ultraviolet, nitrogen is used to avoid the strong

oxygen absorption of UV at these wavelengths



Dried and pressurized, it is used as an dielectric gas for high voltage



In the manufacture of stainless steel




Contact Details

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