Nitrogen - Properties, Purity and Packaging, N2 - at room temp and atmospheric pressure, nitrogen is a colorless, odorless, nontoxic, nonflammable gas. It constitutes 78% by volume of the atmosphere. Naturally occuring nitrogen contains two isotopes, 14N

Periodic Chart | Incompatibility Chart | Oxides Chart | Reference

General Characteristics

Health Hazards

Material Recommendations

A colorless, nonflammable and odorless gas.

A simple asphyxiant

Normal materials can be used

TLV-TWA

Flammable Limits

DOT Class / Label

None Established

Nonflammable

2.2 / Nonflammable

Molecular Weight

Specific Gravity

Specific Volume

28.0

0.967 @ 77 F

13.8 cu.ft./lb @ 70 F

CGA Valve Outlet

CAS Registry No.

UN Number

580

7727-37-9

1066

National Stock Number (NSN) Applicable to Nitrogen
CFC Specifications Chart

MIL Spec / Fed Specs
MSDS for Nitrogen

Grade
Part #

Purity Minimum

Cylinder
Size

Volume
SCF

Pressure
@ 70 F

Comments

Research
406300

99.9995% Min.

049
044
002

304
210
4

2640
2000
2000

None

Ultra High
403700

99.999% Min.

049
044
016
007

304
210
80
34

2640
2000
2000
2000

None

Zero
403800

99.998%
<0.5 ppm THC

049
044
016
007

304
210
80
34

2640
2000
2000
2000

None

Oxygen Free
404000

99.98%
<0.5 ppm O2

049
044
016
007

304
210
80
34

2640
2000
2000
2000

None

Prepurified
430900

99.998%

049
044
016
007

304
210
80
34

2640
2000
2000
2000

None

High Purity 403900	99.995%	049 044 016 007	304 210 80 34	2640 2000 2000 2000	None
Industrial/Welding	99.5%	049 044 016 007	304 210 80 34	2640 2000 2000 2000

Uses: Nitrogen - N2 - at room temp and atmospheric pressure, nitrogen is a colorless, odorless, nontoxic, nonflammable gas. It constitutes 78% by volume of the atmosphere. Naturally occurring nitrogen contains two isotopes, 14N and 15N. Used as an inert gas in electrical systems, chemical and food packaging industry. Used in the drying and preparation of refrigeration systems.