|
|
Methane (CH4) |
|
 A
flammable, colorless, and odorless gas. It is shipped
as a compressed gas in steel cylinders.
|
Molecular Weight:
|
16.04 |
Safety Data
|
|
|
|
Specific Volume:
|
24.06 cf/lb@NTP |
Nontoxic-Simple Asphyxiant |
Critical Temperature:
|
-115.8 °F |
|
Boiling Point:
|
-259°F(-161.7°C) @1 atm
|
|
Critical Pressure: |
673.1 psia |
|
CAS No.:
|
74-82-8 |
|
|
|
|
Hazards:
|
Flammability, Suffocation, High
Pressure |
Flammable Limits: |
5-15% in Air |
|
DOT Label:
|
Red, Flammable Gas |
UN Number:
|
UN 1971 |
|
DOT Class:
|
2.1 |
|
Cylinder:
|
Steel Alloy |
|
Cylinder
Size
|
DOT
Specification
|
Cylinder
Dimension
(in.)
|
Average
Tare Weight
(lbs)
|
Average
Internal Volume
(ft3)(L)
|
Contents
(lbs)
|
|
300
|
3AA2400
|
9x55
|
137
|
1.76 (49.8)
|
360
|
|
200
|
3AA2265
|
9x51
|
119
|
1.55 (43.9)
|
300
|
| CH4 |
>=
|
99.99% |
%V |
| N2 |
=<
|
45 |
ppmv |
| O2 |
=<
|
10 |
ppmv |
| H2O |
=<
|
5 |
ppmv |
| C2H6 |
=<
|
25 |
ppmv |
| Other HC |
=<
|
20 |
ppmv |
| CH4 |
>=
|
99.995% |
%V |
| N2 |
=<
|
25 |
ppmv |
| O2 |
=<
|
5 |
ppmv |
| H2O |
=<
|
3 |
ppmv |
| C2H6 |
=<
|
20 |
ppmv |
| Other HC |
=<
|
15 |
ppmv |
| CH4 |
>=
|
99.999% |
%V |
| N2 |
=<
|
5 |
ppmv |
| O2 |
=<
|
1 |
ppmv |
| H2O |
=<
|
2 |
ppmv |
| C2H6 |
=<
|
5 |
ppmv |
| Other HC |
=<
|
2 |
ppmv |
|
Additional Information:
|
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.
|
|
|
