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Formula: CH4 or R50

Methane is a colorless, flammable, odorless gas.

Grade 2 Grade 3 Grade 4 Grade 4.5 Grade 5 Grade 5.5 Grade 6
Purity 99.0% 99.9% 99.99% 99.995% 99.999% 99.9995% 99.9999%
Nitrogen < 3000 ppmv < 200 ppmv < 40 ppmv < 20 ppmv < 5 ppmv < 1 ppmv < 0.5 ppmv
Oxygen < 750 ppmv < 50 ppmv < 5 ppmv < 5 ppmv < 2 ppmv < 1 ppmv < 0.5 ppmv
Ethane < 60 ppmv < 30 ppmv < 5 ppmv < 3 ppmv < 0.5 ppmv
Other Hydrocarbons < 1.0 % < 800 ppmv < 10 ppmv < 5 ppmv < 2 ppmv < 1 ppmv < 0.5 ppmv
Moisture < 10 ppmv < 5 ppmv < 5 ppmv < 5 ppmv < 2 ppmv < 1 ppmv < 0.5ppmv
Total Impurities < 1.0 % < 1000 ppmv < 100 ppmv < 50 ppmv < 10 ppmv < 5 ppmv < 1 ppmv

**Moisture level guaranteed only when Electronic Fluorocarbons prepares the cylinders.
All concentrations are on a mol/mol basis unless otherwise stated.
This product is analyzed gas phase.

Chemical & Physical Properties
Molecular Weight 16.043
Specific Volume 23.7 cf/lb
Flammability Limits 5.0 – 15% in Air
Valve Outlet CGA 350
LB CGA 170

 

Shipping Information
DOT Name Methane, Compressed
Hazard Class 2.1
DOT No. UN 1971
DOT Label Flammable Gas
CAS No. 74-82-8

 

 

Cylinder Size Fill Volume (CF)
49L/Size 300 360
44L/Size 200 260
16L/Size 80 100
7L/Size 35 50
150AL 175