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Methane (CH4) |
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 A
flammable, colorless, and odorless gas. It is shipped
as a compressed gas in steel cylinders.
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Molecular Weight:
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16.04 |
Safety Data
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Specific Volume:
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24.06 cf/lb@NTP |
Nontoxic-Simple Asphyxiant |
Critical Temperature:
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-115.8 °F |
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Boiling Point:
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-259°F(-161.7°C) @1 atm
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Critical Pressure: |
673.1 psia |
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CAS No.:
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74-82-8 |
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Hazards:
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Flammability, Suffocation, High
Pressure |
Flammable Limits: |
5-15% in Air |
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DOT Label:
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Red, Flammable Gas |
UN Number:
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UN 1971 |
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DOT Class:
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2.1 |
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Cylinder:
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Steel Alloy |
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Cylinder
Size
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DOT
Specification
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Cylinder
Dimension
(in.)
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Average
Tare Weight
(lbs)
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Average
Internal Volume
(ft3)(L)
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Contents
(lbs)
|
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300
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3AA2400
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9x55
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137
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1.76 (49.8)
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360
|
|
200
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3AA2265
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9x51
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119
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1.55 (43.9)
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300
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GRADE
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CP
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ULTRAHIGH-PURITY
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RESEARCH
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Critical Assay
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99.9%
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99.99%
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99.999%
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Nitrogen
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< 500 ppm
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< 10 ppm
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< 5 ppm
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Oxygen
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< 50ppm
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< 1ppm
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< 1 ppm
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Other HC
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< 30ppm
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< 15 ppm
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< 1 ppm
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Ethane
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< 400 ppm
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< 70 ppm
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< 2 ppm
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Moisture
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<10ppm
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< 5ppm
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< 1 ppm
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Valve Material
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Brass
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Brass
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Brass
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CGA Connection
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350
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350
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350
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Additional Information:
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Methane is a flammable,
colorless, odorless, compressed gas packaged in
cylinders under high pressure. It poses an immediate
fire and explosion hazard when mixed with air
at concentrations exceeding 5.0%. High concentrations
that can cause rapid suffocation are within the
flammable range and should not be entered.
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