header
Back to home page Back to Praxair Corporate Site Welding Supplies Specialty Gases and Equipment Back to Cart Praxair Direct Price Quote Button Sign in Register Contact Us Store Locator Home Resource Center

For questions about Praxair products
please call 1-800-PRAXAIR or email us.

Nitrogen

 

 

Nitrogen (N2)

Nitrogen (N2) is a diatomic gas which comprises 78 percent of the earth’s atmosphere. Colorless, odorless, tasteless, and nontoxic, nitrogen exists as a nonflammable gas at atmospheric temperatures and pressures. Nitrogen is utilized as a purge gas with stainless steel tube welding as well as a controlled addition for shielding gases utilized to GMAW (gas metal arc weld) of austenitic and duplex grades of stainless steel. Nitrogen can enhance plasma cutting, food processing, inerting and heat-treating operations.

Nitrogen

Chemical Formula N2
Minimum Purity 99.995 %
Cylinder CGA Outlet 580
680 (greater than 3,000 psig)
MSDS P-4631
CAS Number 7727-37-9
UN Number 1066
US DOT Name Nitrogen, Compressed
US DOT Label Nonflammable Gas
US DOT Class 2.2 Nonflammable Gas

 

Cylinder Style Volume (ft3/m3) Pressure at 70 °F (21 °C) (psig/kPa) Part Number
T 304/8.44 2,640/18,202 NI T
K 228/6.33 2,200/15,168 NI K
4K 430/11.92 4,500/31,050 NI 4K
 

 

Nitrogen, Cryogenic Liquid

Chemical Formula N2
Minimum Purity 99.998 %
Normal Boiling Point -320 °F (-196 °C)
Cylinder CGA Outlet 295 (Liquid)
MSDS P-4630
CAS Number 7727-37-9 (R)
UN Number 1977
US DOT Name Nitrogen, Refrigerated Liquid
US DOT Label Nonflammable Gas
US DOT Class 2.2 Nonflammable Gas

 

Cylinder Style Volume (ft3) Pressure (psig) Part Number
160 Liter 3,930 22 NI LC160-22
200 Liter 4,580 22 NI LC200-22
230 Liter 5,380 22 NI LC230-22
250 Liter 5,610 22 NI LC250-22
160 Liter 3,690 230 NI LC160-230
200 Liter 4,110 230 NI LC200-230
230 Liter 4,380 230 NI LC230-230
250 Liter 5,030 230 NI LC250-230
160 Liter 3,470 350 NI LC160-350
200 Liter 3,870 350 NI LC200-350
230 Liter 4,120 350 NI LC230-350
250 Liter 4,740 350 NI LC250-350
450 Liter Microbulk 10,332 250 NI LC450-250
450 Liter Microbulk 10,332 350 NI LC450-350
450 Liter Microbulk 10,332 500 NI LC450-500
1000 Liter Microbulk 23,370 350 NI LC1000-350
1000 Liter Microbulk 23,370 500 NI LC1000-500
1500 Liter Microbulk 35,550 350 NI LC1500-350
1500 Liter Microbulk 35,550 500 NI LC1500-500