Oxygen is the most abundant element on the earth’s surface and as a gas is indispensable in respiration. Composing almost 21% of the atmosphere, oxygen is a colorless, odorless and tasteless gas which supports combustion. As a liquid at -297ºF, oxygen is light blue in color and is approximately 14% heavier than water.
Liquid oxygen is classified as a Type II by the Compressed Gas Association (CGA). CGA Pamphlet G-4.3, Type II, Grade B and the United States Pharmacopia (USP) specs are considered standards for commercial liquid oxygen.
Oxygen
(Units in ppm (v/v) unless show otherwise)
Oxygen is also available in high purity VLSI grade and ultra high purity ELSI grade (99.9999) liquid oxygen for customer 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.
Oxygen Conversion Data
|
Oxygen
|
Weight
|
Gas
|
Liquid
|
|
Pounds
|
Kilograms
|
Cubic Feet
|
Cubic Meters
|
Gallons
|
Liters
|
|
Lb
|
Kg
|
SCF
|
Nm3
|
Gal
|
L
|
|
1 Pound |
1
|
0.4536
|
12.078
|
0.3173
|
0.105
|
0.3975
|
|
1 Kilogram |
2.205
|
1
|
26.632
|
0.6996
|
0.2315
|
0.8762
|
|
1 Ton |
2000
|
907.2
|
24157
|
635
|
209.9
|
794.5
|
|
1 SCF Gas |
0.08279
|
0.03755
|
1
|
0.026269
|
0.008689
|
0.03289
|
|
1 Nm3 Gas |
3.1491
|
1.4282
|
38.04
|
1
|
33.05
|
1.2511
|
|
1 Gal Liquid |
9.528
|
4.321
|
115.1
|
3.026
|
1
|
3.785
|
|
1 L Liquid |
2.517
|
1.1416
|
30.41
|
0.7995
|
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.
