Nitrogen constitutes 78% of the
atmosphere and is a constituent of all living tissues.
Under normal conditions, nitrogen is a colorless,
odorless and tasteless inert gas which has no toxic
properties and is slightly lighter than air. As
a liquid at -320 ºF it has a water-white appearance
and must be handled with care due to its low temperature.
Liquid Nitrogen is classified as
Type II by the Compressed Gas Association (CGA).
CGA-10.1, Type II, Grade L or The National Formulary
Specs (similar to USP) are considered commercial
liquid nitrogen standards.
Nitrogen
(Units in ppm (v/v) unless show otherwise)
* N2 includes trace quantities of neon, helium and
small quantities of argon.
Currently the United States Department of Agriculture
(USDA) has no specification for liquid nitrogen
in food applications. However, the Food and Drug
Administration (FDA) considers nitrogen a G.R.A.S.
substance, Generally Regarded As Safe as a good
additive.
Nitrogen is also available in high purity VLSI
grade for customers requiring stringent purity standards.
Keen guarantees commercial grade product delivered
as a liquid meets the commercial CGA specification
listed. Keen does not normally guarantee commercial
grade product delivered as a compressed gas meets
the gaseous specification listed because gas purities
are affected by normal cylinder filling practices
and process procedures which may compromise the
integrity of the product.
Nitrogen
Conversion Data
|
Nitrogen
|
Weight |
Gas |
Liquid |
| Pounds |
Kilograms |
Cubic
Feet |
Cubic
Meters |
Gallons |
Liters |
Lb |
Kg |
SCF |
Nm3 |
Gal |
L |
| 1 Pound |
1 |
0.4536 |
13.803 |
0.3627 |
0.1481 |
0.5606 |
| 1 Kilogram |
2.205 |
1 |
30.42 |
0.7996 |
0.3262 |
1.2349 |
| 1 Ton |
2000 |
907.2 |
27606 |
725.4 |
296.2 |
1121 |
| 1 SCF
Gas |
0.07245 |
0.03286 |
1 |
0.02628 |
0.01074 |
0.04065 |
| 1 Nm3
Gas |
2.757 |
1.2506 |
38.04 |
1 |
0.408 |
1.5443 |
| 1 Gal
Liquid |
6.745 |
3.06 |
93.11 |
2.447 |
1 |
3.785 |
| 1 L
Liquid |
1.782 |
0.8083 |
24.6 |
0.6464 |
0.2642 |
1 |
SCF (standard cubic foot) and SM3 (standard cubic
meter) gas measured at 1 atmosphere and 70ºF.
Liquid measured at 0ºF and saturated pressure.
Nm3 (normal cubic meter) gas measured at 1 atmosphere
and 0ºC.
All values round to the nearest 4/5 significant
numbers.
